day1/Session-1.tex
author Madhusudan.C.S <madhusudancs@gmail.com>
Sat, 03 Oct 2009 00:41:12 +0530
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% Tutorial slides on Python.
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%
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% Author: Prabhu Ramachandran <prabhu at aero.iitb.ac.in>
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% Copyright (c) 2005-2008, Prabhu Ramachandran
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\documentclass[14pt,compress]{beamer}
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%\documentclass[draft]{beamer}
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%\documentclass[compress,handout]{beamer}
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%\usepackage{pgfpages} 
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%\pgfpagesuselayout{2 on 1}[a4paper,border shrink=5mm]
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% Modified from: generic-ornate-15min-45min.de.tex
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\mode<presentation>
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{
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  \usetheme{Warsaw}
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  \useoutertheme{split}
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  \setbeamercovered{transparent}
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}
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\usepackage[english]{babel}
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\usepackage[latin1]{inputenc}
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%\usepackage{times}
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\usepackage[T1]{fontenc}
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% Taken from Fernando's slides.
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\usepackage{ae,aecompl}
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\usepackage{mathpazo,courier,euler}
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\usepackage[scaled=.95]{helvet}
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\definecolor{darkgreen}{rgb}{0,0.5,0}
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\usepackage{listings}
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\lstset{language=Python,
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    basicstyle=\ttfamily,
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    commentstyle=\color{red}\itshape,
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  stringstyle=\color{darkgreen},
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  showstringspaces=false,
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  keywordstyle=\color{blue}\bfseries}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% Macros
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\setbeamercolor{emphbar}{bg=blue!20, fg=black}
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\newcommand{\emphbar}[1]
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{\begin{beamercolorbox}[rounded=true]{emphbar} 
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      {#1}
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 \end{beamercolorbox}
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}
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\newcounter{time}
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\setcounter{time}{0}
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\newcommand{\inctime}[1]{\addtocounter{time}{#1}{\tiny \thetime\ m}}
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\newcommand{\typ}[1]{\texttt{#1}}
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\newcommand{\kwrd}[1]{ \texttt{\textbf{\color{blue}{#1}}}  }
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%%% This is from Fernando's setup.
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% \usepackage{color}
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% \definecolor{orange}{cmyk}{0,0.4,0.8,0.2}
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% % Use and configure listings package for nicely formatted code
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% \usepackage{listings}
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% \lstset{
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%    language=Python,
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%    basicstyle=\small\ttfamily,
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%    commentstyle=\ttfamily\color{blue},
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%    stringstyle=\ttfamily\color{orange},
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%    showstringspaces=false,
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%    breaklines=true,
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%    postbreak = \space\dots
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% }
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% Title page
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\title[Basic Python]{Python:\\A great programming toolkit}
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\author[Asokan \& Prabhu] {Asokan Pichai\\Prabhu Ramachandran}
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\institute[IIT Bombay] {Department of Aerospace Engineering\\IIT Bombay}
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\date[] {10, August 2009}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%\pgfdeclareimage[height=0.75cm]{iitmlogo}{iitmlogo}
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%\logo{\pgfuseimage{iitmlogo}}
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%% Delete this, if you do not want the table of contents to pop up at
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%% the beginning of each subsection:
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\AtBeginSubsection[]
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{
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  \begin{frame}<beamer>
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    \frametitle{Outline}
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    \tableofcontents[currentsection,currentsubsection]
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  \end{frame}
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}
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% If you wish to uncover everything in a step-wise fashion, uncomment
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% the following command: 
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%\beamerdefaultoverlayspecification{<+->}
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%\includeonlyframes{current,current1,current2,current3,current4,current5,current6}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% DOCUMENT STARTS
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\begin{document}
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\begin{frame}
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  \titlepage
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\end{frame}
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\begin{frame}
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  {Acknowledgements}
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  \begin{center}
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  This program is conducted by\\
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  IIT, Bombay\\
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  through CDEEP\\as part of  the open source initiatives\\
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  under the aegis of\\
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  \alert{National Mission on Education through ICT,} \\
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  Ministry of HRD.
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  \end{center}
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\end{frame}
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\begin{frame}
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  \frametitle{Outline}
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  \tableofcontents
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  % You might wish to add the option [pausesections]
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\end{frame}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% TODO
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%
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%  * Add slide on Python packages (modules)
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%  * Add slides on reference counting.
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\section{Agenda}
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\begin{frame}{About the Workshop}
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  \begin{description}
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	\item[Day 1, Session 1] Sat 09:30--11:00
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	\item[Day 1, Session 2] Sat 11:15--12:45
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	\item[Day 1, Session 3] Sat 13:45--15:15
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	\item[Day 1, Session 4] Sat 15:30--17:00
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        \item[Day 2, Session 1] Sun 09:30--11:00
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	\item[Day 2, Session 2] Sun 11:15--12:45
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	\item[Day 2, Session 3] Sun 13:45--15:15
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	\item[Day 2, Session 4] Sun 15:30--17:00
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  \end{description}
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\end{frame}
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\section{Agenda}
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\begin{frame}{About the Workshop}
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  \begin{block}{Goal of the workshop}
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	At the end of this program, successful participants will be able to use python as their scripting and problem solving language. Aimed at Engg. students--focus on basic numerics and plotting-- but should serve a similar purpose for others. 
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  \end{block}
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\end{frame}
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\begin{frame}{Checklist}
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  Let us verify that all of us are having the same (similar) tools and environment
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  \begin{description}
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	\item[python] Type python at the command line. Do you see version 2.5 or later?
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	\item[IPython] Is IPython available?
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	\item[Editor] Which editor? scite, vim, emacs, \ldots
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  \end{description}
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\end{frame}
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\section{Overview}
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\begin{frame}{Session 1}
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  \begin{itemize}
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	\item Introduction and motivation
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	\item Using the interpreter(s)
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	\item Basic data types: int, float, string
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	\item Basic data structures: list
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	\item Basic console IO: \texttt{raw\_input(), print}
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    \item Basic control flow: \texttt{if, while}
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	\item Problem set 1
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    \item Functions $\rightarrow$ Problem set 2
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    \item lists, \texttt{for}  $\rightarrow$ Problem set 3
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    \item IO, Modules $\rightarrow$ Problem sets 4,5, \ldots
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  \end{itemize}
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\end{frame}
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\begin{frame}
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  \frametitle{Introduction}
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  \begin{itemize}
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  \item Creator and BDFL: Guido van Rossum
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  \item Conceived in December 1989
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  \item ``Python'' as in Monty Python's Flying Circus
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  \item Current stable version of Python is 2.6.x
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  \item PSF license (like BSD: no strings attached)
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  \item Highly cross platform
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  \item Runs on the Nokia series 60!
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  \item \alert{Philosophy:} Simple and complete by design
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  \end{itemize}
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\end{frame}
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\begin{frame}
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  \frametitle{Resources}
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  \begin{itemize}
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  \item Part of many GNU/Linux distributions
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  \item Web: \url{http://www.python.org}
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  \item Doc: \url{http://www.python.org/doc}
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  \item Free Tutorials:
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    \begin{itemize}
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    \item Official Python tutorial: \url{http://docs.python.org/tut/tut.html}
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    \item Byte of Python: \url{http://www.byteofpython.info/}
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    \item Dive into Python: \url{http://diveintopython.org/}
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    \end{itemize}
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  \end{itemize}
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\end{frame}
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\begin{frame}
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  \frametitle{Why Python?}
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  \begin{itemize}
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  \item Designed to be readable and easy to use
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  \item High level, interpreted, modular, OO
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  \item Much faster development cycle
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  \item Powerful interactive environment
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  \item Rapid application development
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  \item Rich standard library and modules
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  \item Interfaces well with C++, C and FORTRAN
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  \item \alert{More than a math package $\Rightarrow$ some extra work compared to math packages}
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  \end{itemize}
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\end{frame}
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\begin{frame}
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  \frametitle{Use cases}
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  \begin{itemize}
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  \item NASA: Space Shuttle Mission Design
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  \item AstraZeneca: Collaborative Drug Discovery
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  \item ForecastWatch.com: Helps Meteorologists
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  \item Industrial Light \& Magic: Runs on Python
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  \item Zope: Commercial grade Toolkit
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  \item Plone: Professional high feature CMS
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  \item RedHat: install scripts, sys-admin tools
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  \item Django: A great web application framework
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  \item Google: A strong python shop
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  \end{itemize}
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\end{frame}
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\begin{frame}
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  \frametitle{To sum up, python is\ldots}
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  \begin{itemize}
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  \item dynamically typed, interpreted $\rightarrow$ rapid testing/prototyping
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  \item powerful, very high level
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  \item has full introspection 
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  \item Did we mention powerful?
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  \end{itemize}
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  \begin{block}{But \ldots}
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    may be wanting in performance. specialised resources such as SWIG, \alert{Cython} are available 
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  \end{block}
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  \inctime{15}
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\end{frame}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% TIME: 15 m, running 15m
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\section{Python}
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\subsection{Getting Started}
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\begin{frame}[fragile]{At the prompt, type the following}
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   \begin{lstlisting}
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>>> print 'Hello Python' 
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>>> print 3124 * 126789
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>>> 1786 % 12
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>>> 3124 * 126789
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>>> a = 3124 * 126789
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>>> big = 12345678901234567890 ** 3
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>>> verybig = big * big * big * big 
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>>> 12345**6, 12345**67, 12345**678
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  \end{lstlisting}
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\end{frame}
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\begin{frame}[fragile]{At the prompt, type the following}
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   \begin{lstlisting}
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>>> s = 'Hello '
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>>> p = 'World'
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>>> s + p 
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>>> s * 12 
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>>> s * s
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>>> s + p * 12, (s + p)* 12
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>>> s * 12 + p * 12
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>>> 12 * s 
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    \end{lstlisting}
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\end{frame}
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\begin{frame}[fragile]{At the prompt, type the following}
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  \begin{lstlisting}
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>>> 17/2
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>>> 17/2.0
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>>> 17.0/2
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>>> 17.0/8.5
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>>> int(17/2.0)
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>>> float(17/2)
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>>> str(17/2.0)
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>>> round( 7.5 )
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  \end{lstlisting}
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  \begin{block}{Mini exercise}
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	Round a float to the nearest integer, using \texttt{int()}?
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  \end{block}
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\end{frame}
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\begin{frame}{Midi exercises}
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  \begin{center}
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    \begin{itemize}
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      \item What does this do?
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      \item \texttt{round(amount * 10) /10.0 }
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    \end{itemize}
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  \end{center}
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\end{frame}
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\begin{frame}{More exercises?}
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  \begin{center}
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    \begin{block}{Round sums}
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      How to round a number to the nearest  5 paise?\\
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      \begin{description}
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        \item[Remember] 17.23 $\rightarrow$ 17.25,\\ while 17.22 $\rightarrow$ 17.20\\
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      \end{description}
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      How to round a number to the nearest 20 paise?
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    \end{block}
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  \end{center}
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\end{frame}
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\begin{frame}[fragile] {A question of good style}
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  \begin{lstlisting}
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    amount = 12.68
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    denom = 0.05
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    nCoins = round(amount/denom)
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    rAmount = nCoins * denom
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  \end{lstlisting}
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  \pause
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  \begin{block}{Style Rule \#1}
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    Naming is 80\% of programming
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  \end{block}
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\end{frame}
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\begin{frame}[fragile]
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  \frametitle{Odds and ends}
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  \begin{itemize}
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    \item Case sensitive
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    \item Dynamically typed $\Rightarrow$ need not specify a type
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      \begin{lstlisting}
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a = 1
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a = 1.1
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a = "Now I am a string!"
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      \end{lstlisting}
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    \item Comments:
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      \begin{lstlisting}
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a = 1  # In-line comments
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# Comment in a line to itself.
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a = "# This is not a comment!"
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      \end{lstlisting}
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  \end{itemize}
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  \inctime{15}
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\end{frame}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% TIME: 15 m, running 30m
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\subsection{Data types}
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parents:
diff changeset
   364
\begin{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   365
  \frametitle{Basic types}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   366
  \begin{itemize}
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parents:
diff changeset
   367
    \item numbers: float, int, long, complex
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
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parents:
diff changeset
   368
    \item strings
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Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   369
    \item boolean
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parents:
diff changeset
   370
  \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   371
  \begin{block}{Also to be discussed later}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   372
    tuples, lists, dictionaries, functions, objects\ldots
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
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parents:
diff changeset
   373
  \end{block}
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parents:
diff changeset
   374
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   375
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   376
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
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parents:
diff changeset
   377
  \frametitle{Numbers}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   378
  \vspace*{-0.25in}
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Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   379
  \begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   380
>>> a = 1 # Int.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   381
>>> l = 1000000L # Long
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   382
>>> e = 1.01325e5 # float
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   383
>>> f = 3.14159 # float
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   384
>>> c = 1+1j # Complex!
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   385
>>> print f*c/a
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   386
(3.14159+3.14159j)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   387
>>> print c.real, c.imag
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   388
1.0 1.0
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   389
>>> abs(c)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   390
1.4142135623730951
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   391
>>> abs( 8 - 9.5 )
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   392
1.5
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   393
  \end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   394
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   395
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   396
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   397
  \frametitle{Boolean}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   398
  \begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   399
>>> t = True
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   400
>>> f = not t
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   401
False
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   402
>>> f or t
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   403
True
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   404
>>> f and t
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   405
False
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   406
  \end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   407
  \begin{block}{Try:}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   408
  NOT True\\
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   409
  not TRUE
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   410
  \end{block}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   411
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   412
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   413
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   414
  \frametitle{Relational and logical operators}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   415
  \begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   416
>>> a, b, c = -1, 0, 1
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   417
>>> a == b
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   418
False
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   419
>>> a <= b 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   420
True
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   421
>>> a + b != c
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   422
True
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   423
>>> a < b < c
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   424
True
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   425
>>> c >= a + b
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   426
True
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   427
  \end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   428
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   429
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   430
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   431
  \frametitle{Strings}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   432
  \begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   433
s = 'this is a string'
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   434
s = 'This one has "quotes" inside!'
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   435
s = "I have 'single-quotes' inside!"
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   436
l = "A string spanning many lines\
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   437
one more line\
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   438
yet another"
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   439
t = """A triple quoted string does
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   440
not need to be escaped at the end and 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   441
"can have nested quotes" etc."""
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   442
  \end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   443
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   444
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   445
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   446
  \frametitle{More Strings}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   447
  \vspace*{-0.2in}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   448
  \begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   449
>>> w = "hello"    
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   450
>>> print w[0] + w[2] + w[-1]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   451
hlo
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   452
>>> len(w) # guess what
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   453
5
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   454
>>> s = u'Unicode strings!'
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   455
>>> # Raw strings (note the leading 'r')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   456
... r_s = r'A string $\alpha \nu$'
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   457
  \end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   458
\pause
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   459
  \begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   460
>>> w[0] = 'H' # Can't do that!
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   461
Traceback (most recent call last):
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   462
  File "<stdin>", line 1, in ?
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   463
TypeError: object does not support item assignment
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   464
  \end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   465
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   466
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   467
\begin{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   468
  \frametitle{Let us switch to IPython}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   469
  Why?
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   470
  \begin{block}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   471
    {Better help (and a lot more)}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   472
    Tab completion\\
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   473
    ?\\
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   474
    .?\\
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   475
    object.function?
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   476
  \end{block}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   477
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   478
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   479
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   480
  \frametitle{More on strings}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   481
  \begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   482
In [1]: a = 'hello world'
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   483
In [2]: a.startswith('hell')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   484
Out[2]: True
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   485
In [3]: a.endswith('ld')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   486
Out[3]: True
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   487
In [4]: a.upper()
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   488
Out[4]: 'HELLO WORLD'
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   489
In [5]: a.upper().lower()
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   490
Out[5]: 'hello world'
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   491
  \end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   492
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   493
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   494
\begin{frame}[fragile]{Still with strings}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   495
  \begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   496
In [6]: a.split()
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   497
Out[6]: ['hello', 'world']
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   498
In [7]: ''.join(['a', 'b', 'c'])
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   499
Out[7]: 'abc'
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   500
In [8] 'd' in ''.join( 'a', 'b', 'c')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   501
Out[8]: False
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   502
  \end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   503
  \begin{block}{Try:}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   504
    \texttt{a.split( 'o' )}\\
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   505
    \texttt{'x'.join( a.split( 'o' ) )}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   506
  \end{block}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   507
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   508
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   509
\begin{frame}[fragile]{Surprise! strings!!}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   510
  \begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   511
In [11]: x, y = 1, 1.2
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   512
In [12]: 'x is %s, y is %s' %(x, y)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   513
Out[12]: 'x is 1, y is 1.234'
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   514
  \end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   515
  \begin{block}{Try:}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   516
    \texttt{'x is \%d, y is \%f' \%(x, y) }\\
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   517
    \texttt{'x is \%3d, y is \%4.2f' \%(x, y) }
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   518
  \end{block}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   519
  \small
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   520
\url{docs.python.org/lib/typesseq-strings.html}\\
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   521
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   522
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   523
\begin{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   524
  {Interlude}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   525
  \begin{block}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   526
    {A classic problem}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   527
    How to interchange values of two variables? Please note that the type of either variable is unknown and it is not necessary that both be of the same type even!
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   528
  \end{block}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   529
  \inctime{30}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   530
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   531
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   532
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   533
% TIME: 25 m+ Interlude break 5 mins, running 60m 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   534
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   535
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   536
\subsection{Control flow}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   537
\begin{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   538
  \frametitle{Control flow constructs}  
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   539
  \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   540
  \item \kwrd{if/elif/else}: branching
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   541
  \item \kwrd{while}: looping
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   542
  \item \kwrd{for}: iterating 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   543
  \item \kwrd{break, continue}: modify loop 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   544
  \item \kwrd{pass}: syntactic filler
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   545
  \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   546
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   547
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   548
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   549
  \frametitle{Basic conditional flow}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   550
  \begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   551
In [21]: a = 7
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   552
In [22]: b = 8
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   553
In [23]: if a > b:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   554
   ....:    print 'Hello'
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   555
   ....: else:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   556
   ....:     print 'World'
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   557
   ....:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   558
   ....:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   559
World
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   560
  \end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   561
  Let us switch to creating a file
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   562
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   563
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   564
\begin{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   565
  {Creating python files}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   566
  \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   567
    \item aka scripts
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   568
    \item use your editor
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   569
    \item Note that white space is the way to specify blocks!
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   570
    \item extension \typ{.py}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   571
    \item run with \texttt{python hello.py} at the command line
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   572
    \item in IPython\ldots
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   573
  \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   574
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   575
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   576
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   577
  \frametitle{\typ{If...elif...else} example}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   578
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   579
x = int(raw_input("Enter an integer:"))
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   580
if x < 0:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   581
     print 'Be positive!'
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   582
elif x == 0:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   583
     print 'Zero'
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   584
elif x == 1:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   585
     print 'Single'
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   586
else:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   587
     print 'More'
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   588
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   589
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   590
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   591
\begin{frame}{Simple IO}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   592
  \begin{block}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   593
    {Console Input}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   594
    \texttt{raw\_input(}) waits for user input.\\Prompt string is optional.\\
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   595
    All keystrokes are Strings!\\\texttt{int()} converts string to int.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   596
  \end{block}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   597
  \begin{block}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   598
    {Console output}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   599
    \texttt{print} is straight forward. Major point to remember is the distinction between \texttt{print x} and \texttt{print x,}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   600
  \end{block}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   601
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   602
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   603
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   604
  \frametitle{Basic looping}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   605
  \begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   606
# Fibonacci series:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   607
# the sum of two elements
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   608
# defines the next
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   609
a, b = 0, 1
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   610
while b < 10:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   611
    print b,
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   612
    a, b = b, a + b
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   613
 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   614
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   615
\typ{1 1 2 3 5 8}\\  
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   616
\alert{Recall it is easy to write infinite loops with \kwrd{while}}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   617
  \inctime{20}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   618
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   619
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   620
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   621
% TIME: 20 m, running 80m 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   622
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   623
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   624
\begin{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   625
  \frametitle{Problem set 1}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   626
  \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   627
    \item All the problems can be\\
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   628
      solved using \kwrd{if} and \kwrd{while} 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   629
  \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   630
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   631
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   632
\begin{frame}{Problem 1.1}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   633
  Write a program that displays all three digit numbers that are equal to the sum of the cubes of their digits. That is, print numbers $abc$ that have the property $abc = a^3 + b^3 + c^3$\\
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   634
These are called $Armstrong$ numbers.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   635
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   636
  
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   637
\begin{frame}{Problem 1.2 - Collatz sequence}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   638
\begin{enumerate}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   639
  \item Start with an arbitrary (positive) integer. 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   640
  \item If the number is even, divide by 2; if the number is odd multiply by 3 and add 1.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   641
  \item Repeat the procedure with the new number.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   642
  \item It appears that for all starting values there is a cycle of 4, 2, 1 at which the procedure loops.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   643
\end{enumerate}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   644
    Write a program that accepts the starting value and prints out the Collatz sequence.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   645
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   646
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   647
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   648
\begin{frame}{Problem 1.3 - Kaprekar's constant}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   649
  \begin{enumerate}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   650
    \item Take a four digit number--with at least two digits different.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   651
    \item Arrange the digits in ascending and descending order, giving A and D respectively.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   652
    \item Leave leading zeros in A!
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   653
    \item Subtract A from D.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   654
    \item With the result, repeat from step 2.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   655
  \end{enumerate}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   656
  Write a program to accept a 4-digit number and display the progression to Kaprekar's constant.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   657
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   658
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   659
\begin{frame}[fragile]{Problem 1.4}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   660
  Write a program that prints the following pyramid on the screen. 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   661
  \begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   662
1
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   663
2  2
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   664
3  3  3
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   665
4  4  4  4
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   666
  \end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   667
The number of lines must be obtained from the user as input.\\
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   668
\pause
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   669
When can your code fail?
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   670
\only<2->{\inctime{25}}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   671
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   672
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   673
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   674
% TIME: 25 m, running 105m 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   675
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   676
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   677
\subsection{Functions}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   678
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   679
\frametitle{Functions: examples}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   680
  \begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   681
def signum( r ):
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   682
    """returns 0 if r is zero
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   683
    -1 if r is negative
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   684
    +1 if r is positive"""
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   685
    if r < 0:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   686
        return -1
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   687
    elif r > 0:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   688
        return 1
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   689
    else:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   690
        return 0
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   691
  \end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   692
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   693
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   694
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   695
  \frametitle{Functions: examples}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   696
  \begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   697
def pad( n, size ): 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   698
    """pads integer n with spaces
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   699
    into a string of length size
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   700
    """
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   701
    SPACE = ' '
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   702
    s = str( n )
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   703
    padSize = size - len( s )
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   704
    return padSize * SPACE + s
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   705
  \end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   706
\pause
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   707
What about \%3d?
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   708
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   709
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   710
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   711
  {What does this function do?}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   712
  \begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   713
def what( n ):
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   714
    if n < 0: n = -n
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   715
    while n > 0:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   716
        if n % 2 == 1:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   717
            return False
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   718
        n /= 10
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   719
    return True
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   720
  \end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   721
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   722
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   723
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   724
  {What does this function do?}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   725
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   726
def what( n ):
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   727
    i = 1    
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   728
    while i * i < n:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   729
        i += 1
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   730
    return i * i == n, i
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   731
  \end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   732
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   733
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   734
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   735
  {What does this function do?}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   736
  \begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   737
def what( n, x ):
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   738
    z = 1.0
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   739
    if n < 0:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   740
        x = 1.0 / x
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   741
        n = -n
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   742
    while n > 0:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   743
        if n % 2 == 1:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   744
            z *= x
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   745
        n /= 2
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   746
        x *= x
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   747
    return z
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   748
  \end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   749
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   750
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   751
\begin{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   752
  {Before writing a function}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   753
  \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   754
      \item Builtin functions for various and sundry
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   755
      \item \typ{abs, any, all, len, max, min}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   756
      \item \typ{pow, range, sum, type}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   757
      \item Refer here:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   758
          \url{http://docs.python.org/library/functions.html}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   759
  \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   760
  \inctime{15} 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   761
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   762
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   763
% TIME: 15 m, running 120m 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   764
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   765
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   766
\begin{frame}{Problem set 2}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   767
  The focus is on writing functions and calling them.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   768
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   769
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   770
\begin{frame}{Problem 2.1}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   771
  Write a function to return the gcd of two numbers.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   772
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   773
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   774
\begin{frame}{Problem 2.2}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   775
A pythagorean triad $(a,b,c)$ has the property $a^2 + b^2 = c^2$.\\By primitive we mean triads that do not `depend' on others. For example, (4,3,5) is a variant of (3,4,5) and hence is not primitive. And (10,24,26) is easily derived from (5,12,13) and should not be displayed by our program. \\
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   776
Write a program to print primitive pythagorean triads. The program should generate all triads with a, b values in the range 0---100
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   777
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   778
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   779
\begin{frame}{Problem 2.3}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   780
  Write a program that generates a list of all four digit numbers that have all their digits even and are perfect squares.\\For example, the output should include 6400 but not 8100 (one digit is odd) or 4248 (not a perfect square).
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   781
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   782
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   783
\begin{frame}{Problem 2.4}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   784
  The aliquot of a number is defined as: the sum of the \emph{proper} divisors of the number. For example, the aliquot(12) = 1 + 2 + 3 + 4 + 6 = 16.\\
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   785
  Write a function that returns the aliquot number of a given number. 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   786
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   787
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   788
\begin{frame}{Problem 2.5}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   789
  A pair of numbers (a, b) is said to be \alert{amicable} if the aliquot number of a is b and the aliquot number of b is a.\\
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   790
  Example: \texttt{220, 284}\\
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   791
  Write a program that prints all five digit amicable pairs.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   792
  \inctime{30}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   793
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   794
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   795
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   796
% TIME: 30 m, running 150m 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   797
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   798
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   799
\subsection{Lists}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   800
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   801
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   802
  \frametitle{List creation and indexing}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   803
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   804
>>> a = [] # An empty list.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   805
>>> a = [1, 2, 3, 4] # More useful.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   806
>>> len(a) 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   807
4
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   808
>>> a[0] + a[1] + a[2] + a[-1]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   809
10
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   810
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   811
  \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   812
  \item Indices start with ?
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   813
  \item Negative indices indicate ?
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   814
  \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   815
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   816
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   817
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   818
  \frametitle{List: slices}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   819
  \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   820
  \item Slicing is a basic operation
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   821
  \item \typ{list[initial:final:step]}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   822
  \item  The step is optional
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   823
  \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   824
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   825
>>> a[1:3] # A slice.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   826
[2, 3]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   827
>>> a[1:-1]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   828
[2, 3, 4]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   829
>>> a[1:] == a[1:-1]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   830
False  
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   831
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   832
Explain last result
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   833
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   834
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   835
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   836
  \frametitle{List: more slices}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   837
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   838
>>> a[0:-1:2] # Notice the step!
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   839
[1, 3]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   840
>>> a[::2]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   841
[1, 3]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   842
>>> a[-1::-1]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   843
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   844
What do you think the last one will do?
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   845
  \emphbar{Note: Strings also use same indexing and slicing.}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   846
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   847
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   848
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   849
  \frametitle{List: examples}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   850
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   851
>>> a = [1, 2, 3, 4]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   852
>>> a[:2]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   853
[1, 3]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   854
>>> a[0:-1:2]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   855
[1, 3]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   856
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   857
\pause
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   858
\alert{Lists are mutable (unlike strings)}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   859
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   860
>>> a[1] = 20
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   861
>>> a
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   862
[1, 20, 3, 4]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   863
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   864
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   865
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   866
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   867
  \frametitle{Lists are mutable and heterogenous}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   868
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   869
>>> a = ['spam', 'eggs', 100, 1234]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   870
>>> a[2] = a[2] + 23
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   871
>>> a
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   872
['spam', 'eggs', 123, 1234]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   873
>>> a[0:2] = [1, 12] # Replace items
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   874
>>> a
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   875
[1, 12, 123, 1234]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   876
>>> a[0:2] = [] # Remove items
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   877
>>> a.append( 12345 )
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   878
>>> a
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   879
[123, 1234, 12345]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   880
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   881
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   882
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   883
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   884
  \frametitle{List methods}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   885
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   886
>>> a = ['spam', 'eggs', 1, 12]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   887
>>> a.reverse() # in situ
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   888
>>> a
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   889
[12, 1, 'eggs', 'spam']
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   890
>>> a.append(['x', 1]) 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   891
>>> a
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   892
[12, 1, 'eggs', 'spam', ['x', 1]]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   893
>>> a.extend([1,2]) # Extend the list.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   894
>>> a.remove( 'spam' )
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   895
>>> a
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   896
[12, 1, 'eggs', ['x', 1], 1, 2]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   897
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   898
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   899
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   900
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   901
  \frametitle{List containership}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   902
  \begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   903
>>> a = ['cat', 'dog', 'rat', 'croc']
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   904
>>> 'dog' in a
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   905
True
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   906
>>> 'snake' in a
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   907
False
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   908
>>> 'snake' not in a
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   909
True
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   910
>>> 'ell' in 'hello world'
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   911
True
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   912
  \end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   913
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   914
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   915
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   916
  \frametitle{Tuples: immutable}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   917
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   918
>>> t = (0, 1, 2)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   919
>>> print t[0], t[1], t[2], t[-1] 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   920
0 1 2 2
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   921
>>> t[0] = 1
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   922
Traceback (most recent call last):
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   923
  File "<stdin>", line 1, in ?
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   924
TypeError: object does not support item
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   925
           assignment
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   926
\end{lstlisting}  
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   927
\begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   928
    \item Multiple return values are actually a tuple.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   929
    \item Exchange is tuple (un)packing
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   930
\end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   931
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   932
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   933
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   934
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   935
  \frametitle{\typ{range()} function}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   936
  \begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   937
>>> range(7)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   938
[0, 1, 2, 3, 4, 5, 6]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   939
>>> range( 3, 9)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   940
[3, 4, 5, 6, 7, 8]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   941
>>> range( 4, 17, 3)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   942
[4, 7, 10, 13, 16]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   943
>>> range( 5, 1, -1)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   944
[5, 4, 3, 2]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   945
>>> range( 8, 12, -1)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   946
[]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   947
  \end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   948
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   949
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   950
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   951
  \frametitle{\typ{for\ldots range(\ldots)} idiom}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   952
  \begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   953
In [83]: for i in range(5):
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   954
   ....:     print i, i * i
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   955
   ....:     
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   956
   ....:     
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   957
0 0
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   958
1 1
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   959
2 4
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   960
3 9
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   961
4 16
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   962
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   963
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   964
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   965
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   966
  \frametitle{\typ{for}: the list companion}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   967
  
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   968
  \begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   969
In [84]: a = ['a', 'b', 'c']
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   970
In [85]: for x in a:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   971
   ....:    print x, chr( ord(x) + 10 )
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   972
   ....:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   973
a  k
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   974
b  l
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   975
c  m
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   976
  \end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   977
  Iterating over the list and not the index + reference\\
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   978
  what if you want the index?
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   979
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   980
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   981
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   982
  \frametitle{\typ{for}: the list companion}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   983
  \begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   984
In [89]: for p, ch in enumerate( a ):
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   985
   ....:     print p, ch
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   986
   ....:     
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   987
   ....:     
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   988
0 a
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   989
1 b
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   990
2 c
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   991
  \end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   992
Try: \typ{print enumerate(a)}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   993
\inctime{20}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   994
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   995
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   996
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   997
% TIME: 20 m, running 170m 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   998
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
   999
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1000
\begin{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1001
  {Problem set 3}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1002
  As you can guess, idea is to use \kwrd{for}!
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1003
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1004
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1005
\begin{frame}{Problem 3.1}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1006
  Which of the earlier problems is simpler when we use \kwrd{for} instead of \kwrd{while}? 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1007
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1008
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1009
\begin{frame}{Problem 3.2}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1010
  Given an empty chessboard and one Bishop placed in any square, say (r, c), generate the list of all squares the Bishop could move to.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1011
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1012
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1013
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1014
  \frametitle{Problem 3.3}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1015
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1016
  Given two real numbers \typ{a, b}, and an integer \typ{N}, write a
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1017
  function named \typ{linspace( a, b, N)} that returns an ordered list
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1018
  of \typ{N} points starting with \typ{a} and ending in \typ{b} and
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1019
  equally spaced.\\
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1020
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1021
  For example, \typ{linspace(0, 5, 11)}, should return, \\
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1022
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1023
[ 0.0 ,  0.5,  1.0 ,  1.5,  2.0 ,  2.5,  
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1024
  3.0 ,  3.5,  4.0 ,  4.5,  5.0 ]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1025
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1026
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1027
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1028
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1029
  \frametitle{Problem 3.4a (optional)}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1030
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1031
Use the \typ{linspace} function and generate a list of N tuples of the form\\
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1032
\typ{[($x_1$,f($x_1$)),($x_2$,f($x_2$)),\ldots,($x_N$,f($x_N$))]}\\for the following functions,\begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1033
  \item \typ{f(x) = sin(x)}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1034
  \item \typ{f(x) = sin(x) + sin(10*x)}.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1035
\end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1036
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1037
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1038
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1039
  \frametitle{Problem 3.4b (optional)}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1040
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1041
  Using the tuples generated earlier, determine the intervals where the roots of the functions lie.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1042
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1043
  \inctime{15}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1044
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1045
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1046
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1047
% TIME: 15 m, running 185m 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1048
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1049
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1050
\subsection{IO}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1051
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1052
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1053
  \frametitle{Simple tokenizing and parsing}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1054
  \begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1055
s = """The quick brown fox jumped
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1056
       over the lazy dog"""
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1057
for word in s.split():
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1058
    print word.capitalize()
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1059
  \end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1060
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1061
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1062
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1063
  \frametitle{Problem 4.1}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1064
  Given a string like, ``1, 3-7, 12, 15, 18-21'', produce the list \\
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1065
  \begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1066
    [1,3,4,5,6,7,12,15,18,19,20,21]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1067
  \end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1068
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1069
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1070
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1071
  \frametitle{File handling}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1072
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1073
>>> f = open('/path/to/file_name')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1074
>>> data = f.read() # Read entire file.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1075
>>> line = f.readline() # Read one line.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1076
>>> f.close() # close the file.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1077
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1078
Writing files
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1079
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1080
>>> f = open('/path/to/file_name', 'w')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1081
>>> f.write('hello world\n')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1082
>>> f.close()
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1083
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1084
\begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1085
    \item Everything read or written is a string
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1086
\end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1087
\emphbar{Try \typ{file?} for more help}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1088
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1089
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1090
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1091
    \frametitle{File and \kwrd{for}}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1092
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1093
>>> f = open('/path/to/file_name')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1094
>>> for line in f:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1095
...     print line
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1096
...
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1097
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1098
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1099
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1100
\begin{frame}{Problem 4.2}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1101
    The given file has lakhs of records in the form:\\
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1102
    \typ{RGN;ID;NAME;MARK1;\ldots;MARK5;TOTAL;PFW}\\
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1103
    Some entries may be empty.  Read the data from this file and print the
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1104
    name of the student with the maximum total marks.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1105
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1106
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1107
\begin{frame}{Problem 4.3}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1108
    For the same data file compute the average marks in different
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1109
    subjects, the student with the maximum mark in each subject and also
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1110
    the standard deviation of the marks.  Do this efficiently.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1111
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1112
    \inctime{20}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1113
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1114
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1115
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1116
% TIME: 20 m, running 205m 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1117
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1118
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1119
\subsection{Modules}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1120
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1121
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1122
    {Modules}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1123
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1124
>>> sqrt(2)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1125
Traceback (most recent call last):
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1126
  File "<stdin>", line 1, in <module>
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1127
NameError: name 'sqrt' is not defined
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1128
>>> import math        
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1129
>>> math.sqrt(2)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1130
1.4142135623730951
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1131
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1132
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1133
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1134
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1135
    {Modules}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1136
  \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1137
    \item The \kwrd{import} keyword ``loads'' a module
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1138
    \item One can also use:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1139
      \begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1140
>>> from math import sqrt
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1141
>>> from math import *
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1142
      \end{lstlisting}    
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1143
    \item What is the difference?
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1144
    \item \alert{Use the later only in interactive mode}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1145
    \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1146
  \emphbar{Package hierarchies}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1147
      \begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1148
>>> from os.path import exists
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1149
      \end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1150
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1151
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1152
\begin{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1153
  \frametitle{Modules: Standard library}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1154
  \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1155
  \item Very powerful, ``Batteries included''
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1156
  \item Some standard modules:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1157
    \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1158
    \item Math: \typ{math}, \typ{random}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1159
    \item Internet access: \typ{urllib2}, \typ{smtplib}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1160
    \item System, Command line arguments: \typ{sys}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1161
    \item Operating system interface: \typ{os}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1162
    \item Regular expressions: \typ{re}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1163
    \item Compression: \typ{gzip}, \typ{zipfile}, and \typ{tarfile}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1164
    \item And a whole lot more!
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1165
    \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1166
  \item Check out the Python Library reference:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1167
    \url{http://docs.python.org/library/}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1168
  \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1169
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1170
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1171
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1172
    {Modules of special interest}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1173
    \begin{description}[matplotlibfor2d]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1174
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1175
        \item[\typ{numpy}] Efficient, powerful numeric arrays
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1176
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1177
        \item[\typ{matplotlib}] Easy, interactive, 2D plotting
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1178
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1179
        \item[\typ{scipy}] statistics, optimization, integration, linear
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1180
            algebra, Fourier transforms, signal and image processing,
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1181
            genetic algorithms, ODE solvers, special functions, and more
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1182
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1183
        \item[Mayavi] Easy, interactive, 3D plotting
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1184
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1185
    \end{description}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1186
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1187
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1188
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1189
    {Creating your own modules}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1190
  \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1191
  \item Define variables, functions and classes in a file with a
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1192
    \typ{.py} extension
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1193
  \item This file becomes a module!
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1194
  \item Accessible when in the current directory
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1195
  \item Use \typ{cd} in IPython to change directory
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1196
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1197
  \item Naming your module
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1198
      \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1199
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1200
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1201
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1202
  \frametitle{Modules: example}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1203
  \begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1204
# --- arith.py ---
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1205
def gcd(a, b):
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1206
    if a%b == 0: return b
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1207
    return gcd(b, a%b)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1208
def lcm(a, b):
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1209
    return a*b/gcd(a, b)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1210
# ------------------
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1211
>>> import arith
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1212
>>> arith.gcd(26, 65)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1213
13
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1214
>>> arith.lcm(26, 65)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1215
130
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1216
  \end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1217
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1218
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1219
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1220
  \frametitle{Problem 5.1}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1221
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1222
  Put all the functions you have written so far as part of the problems
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1223
  into one module called \typ{iitb.py} and use this module from IPython.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1224
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1225
\inctime{20}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1226
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1227
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1228
% TIME: 20 m, running 225m 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1229
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1230
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1231
\begin{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1232
  \frametitle{Did we meet the goal?}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1233
  \tableofcontents
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1234
  % You might wish to add the option [pausesections]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1235
  \end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1236
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1237
  \begin{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1238
    {Tomorrow}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1239
    \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1240
      \item Plotting: 2D, 3D
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1241
      \item NumPy, SciPy
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1242
      \item Dictionary, Set
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1243
      \item Debugging
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1244
      \item Testing
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1245
      \item \ldots
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1246
    \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1247
    11:30--13:00 Discussion of answers to problems OPTIONAL
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1248
  \end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1249
\end{document}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1250
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1251
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1252
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1253
  \frametitle{More on functions}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1254
  \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1255
  \item Support default and keyword arguments
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1256
  \item Scope of variables in the function is local
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1257
  \item Mutable items are \alert{passed by reference}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1258
  \item First line after definition may be a documentation string
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1259
    (\alert{recommended!})
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1260
  \item Function definition and execution defines a name bound to the
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1261
    function
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1262
  \item You \emph{can} assign a variable to a function!
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1263
  \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1264
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1265
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1266
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1267
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1268
  \frametitle{Functions: default arguments}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1269
  \begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1270
def ask_ok(prompt, retries=4, complaint='Yes or no!'):
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1271
    while True:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1272
        ok = raw_input(prompt)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1273
        if ok in ('y', 'ye', 'yes'): 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1274
            return True
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1275
        if ok in ('n', 'no', 'nop', 'nope'): 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1276
            return False
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1277
        retries = retries - 1
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1278
        if retries < 0: 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1279
            raise IOError, 'bad user'
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1280
        print complaint
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1281
  \end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1282
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1283
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1284
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1285
  \frametitle{Functions: keyword arguments}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1286
  \begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1287
def parrot(voltage, state='a stiff', 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1288
           action='voom', type='Norwegian Blue'):
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1289
    print "-- This parrot wouldn't", action,
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1290
    print "if you put", voltage, "Volts through it."
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1291
    print "-- Lovely plumage, the", type
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1292
    print "-- It's", state, "!"
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1293
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1294
parrot(1000)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1295
parrot(action = 'VOOOOOM', voltage = 1000000)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1296
parrot('a thousand', state = 'pushing up the daisies')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1297
parrot('a million', 'bereft of life', 'jump')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1298
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1299
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1300
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1301
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1302
  \frametitle{Functions: arbitrary argument lists}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1303
  \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1304
  \item Arbitrary number of arguments using \verb+*args+ or
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1305
    \verb+*whatever+
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1306
  \item Keyword arguments using \verb+**kw+
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1307
  \item Given a tuple/dict how do you call a function?
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1308
    \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1309
    \item Using argument unpacking
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1310
    \item For positional arguments: \verb+foo(*[5, 10])+
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1311
    \item For keyword args: \verb+foo(**{'a':5, 'b':10})+
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1312
    \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1313
  \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1314
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1315
def foo(a=10, b=100):
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1316
    print a, b
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1317
def func(*args, **keyword):
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1318
    print args, keyword
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1319
# Unpacking:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1320
args = [5, 10]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1321
foo(*args)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1322
kw = {'a':5, 'b':10}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1323
foo(**kw)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1324
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1325
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1326
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1327
\subsection{Modules, exceptions, classes}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1328
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1329
\begin{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1330
  \frametitle{Modules}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1331
  \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1332
  \item Define variables, functions and classes in a file with a
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1333
    \typ{.py} extension
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1334
  \item This file becomes a module!
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1335
  \item Modules are searched in the following:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1336
    \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1337
    \item Current directory
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1338
    \item Standard: \typ{/usr/lib/python2.3/site-packages/} etc.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1339
    \item Directories specified in PYTHONPATH
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1340
    \item \typ{sys.path}: current path settings (from the \typ{sys}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1341
      module)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1342
    \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1343
  \item The \typ{import} keyword ``loads'' a module
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1344
  \item One can also use:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1345
    \mbox{\typ{from module import name1, name2, name2}}\\
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1346
    where \typ{name1} etc. are names in the module, ``module''
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1347
  \item \typ{from module import *} \ --- imports everything from module,
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1348
    \alert{use only in interactive mode}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1349
  \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1350
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1351
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1352
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1353
  \frametitle{Modules: example}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1354
  \begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1355
# --- foo.py ---
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1356
some_var = 1
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1357
def fib(n): # write Fibonacci series up to n
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1358
    """Print a Fibonacci series up to n."""
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1359
    a, b = 0, 1
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1360
    while b < n:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1361
        print b,
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1362
        a, b = b, a+b
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1363
# EOF
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1364
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1365
>>> import foo
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1366
>>> foo.fib(10)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1367
1 1 2 3 5 8 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1368
>>> foo.some_var
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1369
1
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1370
  \end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1371
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1372
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1373
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1374
  \frametitle{Namespaces}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1375
  \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1376
  \item A mapping from names to objects
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1377
  \item Modules introduce a namespace 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1378
  \item So do classes
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1379
  \item The running script's namespace is \verb+__main__+
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1380
  \item A modules namespace is identified by its name
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1381
  \item The standard functions (like \typ{len}) are in the
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1382
    \verb+__builtin__+ namespace
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1383
  \item Namespaces help organize different names and their bindings to
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1384
    different objects
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1385
  \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1386
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1387
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1388
\begin{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1389
  \frametitle{Exceptions}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1390
  \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1391
  \item Python's way of notifying you of errors
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1392
  \item Several standard exceptions: \typ{SyntaxError}, \typ{IOError}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1393
    etc.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1394
  \item Users can also \typ{raise} errors
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1395
  \item Users can create their own exceptions
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1396
  \item Exceptions can be ``caught'' via \typ{try/except} blocks
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1397
  \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1398
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1399
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1400
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1401
  \frametitle{Exception: examples}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1402
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1403
>>> 10 * (1/0)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1404
Traceback (most recent call last):
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1405
  File "<stdin>", line 1, in ?
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1406
ZeroDivisionError: integer division or modulo by zero
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1407
>>> 4 + spam*3
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1408
Traceback (most recent call last):
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1409
  File "<stdin>", line 1, in ?
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1410
NameError: name 'spam' is not defined
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1411
>>> '2' + 2
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1412
Traceback (most recent call last):
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1413
  File "<stdin>", line 1, in ?
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1414
TypeError: cannot concatenate 'str' and 'int' objects
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1415
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1416
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1417
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1418
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1419
  \frametitle{Exception: examples}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1420
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1421
>>> while True:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1422
...     try:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1423
...         x = int(raw_input("Enter a number: "))
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1424
...         break
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1425
...     except ValueError:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1426
...         print "Invalid number, try again..."
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1427
...
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1428
>>> # To raise exceptions
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1429
... raise ValueError, "your error message"
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1430
Traceback (most recent call last):
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1431
  File "<stdin>", line 2, in ?
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1432
ValueError: your error message
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1433
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1434
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1435
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1436
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1437
  \frametitle{Classes: the big picture}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1438
  \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1439
  \item Lets you create new data types
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1440
  \item Class is a template for an object belonging to that class
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1441
  \item Note: in Python a class is also an object
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1442
  \item Instantiating a class creates an instance (an object)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1443
  \item An instance encapsulates the state (data) and behavior
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1444
    (methods)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1445
  \item Allows you to define an inheritance hierarchy
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1446
    \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1447
    \item ``A Honda car \alert{is a} car.''
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1448
    \item ``A car \alert{is an} automobile.''
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1449
    \item ``A Python \alert{is a} reptile.''
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1450
    \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1451
  \item Programmers need to think OO
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1452
  \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1453
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1454
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1455
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1456
  \frametitle{Classes: what's the big deal?}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1457
  \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1458
  \item Lets you create objects that mimic a real problem being
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1459
    simulated
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1460
  \item Makes problem solving more natural and elegant
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1461
  \item Easier to create code
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1462
  \item Allows for code-reuse
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1463
  \item Polymorphism
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1464
  \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1465
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1466
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1467
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1468
  \frametitle{Class definition and instantiation}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1469
  \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1470
  \item Class definitions when executed create class objects
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1471
  \item Instantiating the class object creates an instance of the
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1472
    class
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1473
  \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1474
\footnotesize
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1475
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1476
class Foo(object):
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1477
    pass
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1478
# class object created.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1479
# Create an instance of Foo.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1480
f = Foo()
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1481
# Can assign an attribute to the instance
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1482
f.a = 100
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1483
print f.a
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1484
100
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1485
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1486
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1487
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1488
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1489
  \frametitle{Classes \ldots}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1490
  \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1491
  \item All attributes are accessed via the \typ{object.attribute}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1492
    syntax
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1493
  \item Both class and instance attributes are supported
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1494
  \item \emph{Methods} represent the behavior of an object: crudely
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1495
    think of them as functions ``belonging'' to the object
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1496
  \item All methods in Python are ``virtual''
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1497
  \item Inheritance through subclassing
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1498
  \item Multiple inheritance is supported
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1499
  \item No special public and private attributes: only good
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1500
    conventions
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1501
    \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1502
    \item \verb+object.public()+: public
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1503
    \item \verb+object._private()+ \& \verb+object.__priv()+: 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1504
      non-public
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1505
    \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1506
  \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1507
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1508
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1509
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1510
  \frametitle{Classes: examples}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1511
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1512
class MyClass(object):
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1513
    """Example class (this is the class docstring)."""
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1514
    i = 12345 # A class attribute
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1515
    def f(self):
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1516
        """This is the method docstring"""
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1517
        return 'hello world'
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1518
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1519
>>> a = MyClass() # creates an instance
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1520
>>> a.f()
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1521
'hello world'
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1522
>>> # a.f() is equivalent to MyClass.f(a)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1523
... # This also explains why f has a 'self' argument.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1524
... MyClass.f(a)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1525
'hello world'
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1526
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1527
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1528
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1529
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1530
  \frametitle{Classes (continued)}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1531
  \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1532
  \item \typ{self} is \alert{conventionally} the first argument for a
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1533
    method
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1534
  \item In previous example, \typ{a.f} is a method object
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1535
  \item When \typ{a.f} is called, it is passed the instance \typ{a} as
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1536
    the first argument
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1537
  \item If a method called \verb+__init__+ exists, it is called when
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1538
    the object is created
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1539
  \item If a method called \verb+__del__+ exists, it is called before
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1540
    the object is garbage collected
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1541
  \item Instance attributes are set by simply ``setting'' them in
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1542
    \typ{self}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1543
  \item Other special methods (by convention) like \verb+__add__+ let
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1544
    you define numeric types:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1545
    {\footnotesize \url{http://docs.python.org/ref/specialnames.html}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1546
      \\ \url{http://docs.python.org/ref/numeric-types.html}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1547
    }
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1548
  \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1549
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1550
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1551
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1552
  \frametitle{Classes: examples}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1553
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1554
class Bag(MyClass): # Shows how to derive classes
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1555
    def __init__(self): # called on object creation.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1556
        self.data = [] # an instance attribute
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1557
    def add(self, x):
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1558
        self.data.append(x)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1559
    def addtwice(self, x):
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1560
        self.add(x)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1561
        self.add(x)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1562
>>> a = Bag()
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1563
>>> a.f() # Inherited method
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1564
'hello world'
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1565
>>> a.add(1); a.addtwice(2)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1566
>>> a.data
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1567
[1, 2, 2]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1568
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1569
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1570
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1571
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1572
  \frametitle{Derived classes}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1573
  \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1574
  \item Call the parent's \verb+__init__+ if needed
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1575
  \item If you don't need a new constructor, no need to define it in subclass
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1576
  \item Can also use the \verb+super+ built-in function
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1577
  \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1578
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1579
class AnotherBag(Bag):
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1580
    def __init__(self):
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1581
        # Must call parent's __init__ explicitly
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1582
        Bag.__init__(self)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1583
        # Alternatively use this:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1584
        super(AnotherBag, self).__init__()
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1585
        # Now setup any more data.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1586
        self.more_data = []
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1587
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1588
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1589
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1590
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1591
  \frametitle{Classes: polymorphism}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1592
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1593
class Drawable(object):
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1594
    def draw(self):
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1595
        # Just a specification.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1596
        pass
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1597
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1598
\mode<presentation>{\pause}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1599
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1600
class Square(Drawable):
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1601
    def draw(self):
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1602
        # draw a square.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1603
class Circle(Drawable):
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1604
    def draw(self):
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1605
        # draw a circle.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1606
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1607
\mode<presentation>{\pause}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1608
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1609
class Artist(Drawable):
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1610
    def draw(self):
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1611
        for obj in self.drawables:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1612
            obj.draw()
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1613
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1614
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1615
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1616
\subsection{Miscellaneous}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1617
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1618
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1619
  \frametitle{Stand-alone scripts}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1620
Consider a file \typ{f.py}:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1621
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1622
#!/usr/bin/env python
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1623
"""Module level documentation."""
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1624
# First line tells the shell that it should use Python
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1625
# to interpret the code in the file.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1626
def f():
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1627
    print "f"
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1628
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1629
# Check if we are running standalone or as module.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1630
# When imported, __name__ will not be '__main__'
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1631
if __name__ == '__main__':
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1632
    # This is not executed when f.py is imported.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1633
    f() 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1634
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1635
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1636
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1637
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1638
  \frametitle{List comprehensions}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1639
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1640
>>> veg = ['tomato', 'cabbage', 'carrot', 'potato']
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1641
>>> [x.upper() for x in veg]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1642
['TOMATO', 'CABBAGE', 'CARROT', 'POTATO']
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1643
>>> vec = range(0, 8)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1644
>>> even = [x for x in vec if x%2 == 0]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1645
>>> even
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1646
[0, 2, 4, 6]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1647
>>> [x*x for x in even]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1648
[0, 4, 16, 36]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1649
>>> odd = [x for x in vec if x%2 == 1]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1650
>>> odd
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1651
[1, 3, 5, 7]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1652
>>> [x*y for x in even for y in odd]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1653
[0, 0, 0, 0, 2, 6, 10, 14, 4, 12, 20, 28, 6, 18,30,42]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1654
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1655
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1656
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1657
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1658
  \frametitle{More IPython features}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1659
  \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1660
  \item Input and output caching:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1661
    \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1662
    \item \verb+In+: a list of all entered input
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1663
    \item \verb+Out+: a dict of all output
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1664
    \item \verb+_+, \verb+__+, \verb+__+ are the last three results as
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1665
      is \verb+_N+
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1666
    \item \verb+%hist [-n]+ macro shows previous history, \verb+-n+
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1667
      suppresses line number information
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1668
    \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1669
  \item Log the session using \verb+%logstart+, \verb+%logon+ and
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1670
    \verb+%logoff+
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1671
  \item \verb+%run [options] file[.py]+ -- running Python code
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1672
    \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1673
    \item \verb+%run -d [-b<N>]+: debug script with pdb
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1674
          \verb+N+ is the line number to break at (defaults to 1)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1675
    \item \verb+%run -t+: time the script
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1676
    \item \verb+%run -p+: Profile the script
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1677
    \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1678
  \item \verb+%prun+ runs a statement/expression under the profiler
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1679
  \item \verb+%macro [options] macro_name n1-n2 n3-n4 n6+ save specified
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1680
    lines to a macro with name \verb+macro_name+
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1681
  \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1682
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1683
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1684
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1685
  \frametitle{More IPython features \ldots}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1686
  \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1687
  \item \verb+%edit [options] [args]+: edit lines of code or file
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1688
    specified in editor (configure editor via \verb+$EDITOR+)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1689
  \item \verb+%cd+ changes directory, see also \verb+%pushd, %popd, %dhist+
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1690
  \item Shell access
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1691
    \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1692
    \item \verb+!command+ runs a shell command and returns its output
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1693
    \item \verb+files = %sx ls+ or \verb+files = !ls+ sets
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1694
      \verb+files+ to all result of the \verb+ls+ command
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1695
    \item \verb+%sx+ is quiet
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1696
    \item \verb+!ls $files+ passes the \verb+files+ variable to the
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1697
      shell command
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1698
    \item \verb+%alias alias_name cmd+ creates an alias for a system
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1699
      command
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1700
    \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1701
  \item \verb+%colors+ lets you change the color scheme to
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1702
    \verb+NoColor, Linux, LightBG+
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1703
  \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1704
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1705
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1706
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1707
  \frametitle{More IPython features \ldots}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1708
  \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1709
  \item Use \verb+;+ at the end of a statement to suppress printing
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1710
    output
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1711
  \item \verb+%bookmark+: store a bookmarked location, for use with \verb+%cd+
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1712
  \item \verb+%who, %whos+: print information on variables
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1713
  \item \verb+%save [options] filename n1-n2 n3-n4+: save lines to a
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1714
    file
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1715
  \item \verb+%time statement+: Time execution of a Python statement or
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1716
    expression
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1717
  \item \verb+%timeit [-n<N> -r<R> [-t|-c]] statement+: time execution
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1718
    using Python's timeit module
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1719
  \item Can define and use profiles to setup IPython differently:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1720
    \verb+math, scipy, numeric, pysh+ etc.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1721
  \item \verb+%magic+: \alert{Show help on all magics}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1722
  \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1723
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1724
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1725
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1726
  \frametitle{File handling}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1727
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1728
>>> # Reading files:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1729
... f = open('/path/to/file_name')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1730
>>> data = f.read() # Read entire file.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1731
>>> line = f.readline() # Read one line.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1732
>>> # Read entire file appending each line into a list
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1733
... lines = f.readlines()
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1734
>>> f.close() # close the file.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1735
>>> # Writing files:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1736
... f = open('/path/to/file_name', 'w')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1737
>>> f.write('hello world\n')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1738
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1739
  \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1740
  \item \typ{tell()}: returns int of current position
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1741
  \item \typ{seek(pos)}: moves current position to specified byte
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1742
  \item Call \typ{close()} when done using a file
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1743
  \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1744
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1745
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1746
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1747
  \frametitle{Math}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1748
  \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1749
  \item \typ{math} module provides basic math routines for
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1750
    floats
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1751
  \item \typ{cmath} module provides math routies for complex
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1752
    numbers
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1753
  \item \typ{random}: provides pseudo-random number generators
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1754
    for various distributions
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1755
  \item These are always available and part of the standard library
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1756
  \item More serious math is provided by the NumPy/SciPy modules --
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1757
    these are not standard and need to be installed separately
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1758
  \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1759
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1760
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1761
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1762
  \frametitle{Timing and profiling}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1763
  \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1764
  \item Timing code: use the \typ{time} module
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1765
  \item Read up on \typ{time.time()} and \typ{time.clock()}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1766
  \item \typ{timeit}: is a better way of doing timing
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1767
  \item IPython has handy \typ{time} and \typ{timeit} macros (type
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1768
    \typ{timeit?} for help)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1769
  \item IPython lets you debug and profile code via the \typ{run}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1770
    macro (type \typ{run?} on the prompt to learn more)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1771
  \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1772
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1773
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1774
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1775
  \frametitle{Odds and ends}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1776
  \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1777
  \item \typ{dir([object])} function: attributes of given object
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1778
  \item \typ{type(object)}: returns type information
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1779
  \item \typ{str(), repr()}: convert object to string representation
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1780
  \item \typ{isinstance, issubclass}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1781
  \item \typ{assert} statements let you do debugging assertions in
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1782
    code
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1783
  \item \typ{csv} module: reading and writing CSV files
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1784
  \item \typ{pickle}: lets you save and load Python objects
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1785
    (\alert{serialization})
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1786
  \item \typ{sys.argv}: command line arguments
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1787
  \item \typ{os.path}: common path manipulations
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1788
  \item Check out the Python Library reference:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1789
    \url{http://docs.python.org/lib/lib.html}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1790
  \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1791
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1792
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1793
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1794
  \frametitle{Test driven development (TDD)}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1795
  \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1796
      \item Why?
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1797
          \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1798
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1799
            \item Forces you to write reusable code!
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1800
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1801
            \item Think about the API
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1802
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1803
            \item More robust
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1804
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1805
            \item Makes refactoring very easy
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1806
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1807
          \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1808
      \item How?  Python offers three major ways of doing this
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1809
          \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1810
              \item doctest
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1811
              \item unittest
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1812
              \item nosetest (and similar like py.test)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1813
          \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1814
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1815
      \item Test every piece of functionality you offer
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1816
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1817
      \item This isn't a formal introduction but more a practical one
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1818
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1819
  \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1820
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1821
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1822
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1823
  \frametitle{Unit test}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1824
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1825
import unittest
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1826
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1827
class MyTestCase(unittest.TestCase):
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1828
    def setUp(self):
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1829
        # Called *before* each test_* 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1830
    def tearDown(self):
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1831
        # Called *after* each test_* 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1832
    def test_something(self):
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1833
        "docstring"
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1834
        #  Test code.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1835
        self.assertEqual(x, y)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1836
        self.assertRaises(ValueError, func, arg1, arg2 ...)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1837
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1838
if __name__ == '__main__':
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1839
    unittest.main() 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1840
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1841
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1842
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1843
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1844
    \frametitle{Nosetest}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1845
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1846
import particle
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1847
def test_particle():
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1848
    # Use asserts here.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1849
    p = particle.Particle(1.0)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1850
    assert p.property[0] == 1.0
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1851
    assert p.property[2] == 0.0
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1852
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1853
if __name__ == '__main__':
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1854
    import nose
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1855
    nose.main()
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1856
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1857
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1858
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1859
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1860
  \frametitle{Testing}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1861
  \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1862
      \item More details: see library reference and search for nosetest
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1863
  \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1864
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1865
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1866
\section{Numerics \& Plotting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1867
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1868
\subsection{NumPy Arrays}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1869
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1870
\newcommand{\num}{\texttt{numpy}}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1871
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1872
\begin{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1873
  \frametitle{The \num\ module}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1874
  \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1875
  \item Manipulating large Python lists for scientific computing is
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1876
    \alert{slow}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1877
  \item Most complex computations can be reduced to a few standard
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1878
    operations
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1879
  \item The \num\ module provides:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1880
    \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1881
    \item An efficient and powerful array type for various common data
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1882
      types
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1883
    \item Abstracts out the most commonly used standard operations on
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1884
      arrays
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1885
    \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1886
  \item Numeric was the first, then came \texttt{numarray}.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1887
    \texttt{numpy} is the latest and is the future
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1888
  \item This course uses \num\ and only covers the absolute basics
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1889
  \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1890
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1891
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1892
\begin{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1893
  \frametitle{Basic concepts}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1894
  \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1895
  \item \num\ arrays are of a fixed size (\typ{arr.size}) and have the
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1896
    same type (\typ{arr.dtype})
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1897
  \item \num\ arrays may have arbitrary dimensionality
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1898
  \item The \typ{shape} of an array is the extent (length) of the
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1899
    array along each dimension
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1900
  \item The \typ{rank(arr)} of an array is the ``dimensionality'' of the
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1901
    array
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1902
  \item The \typ{arr.itemsize} is the number of bytes (8-bits) used for
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1903
    each element of the array
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1904
  \item \alert{Note:} The \typ{shape} and \typ{rank} may change as
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1905
    long as the \typ{size} of the array is fixed
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1906
  \item \alert{Note:} \typ{len(arr) != arr.size} in general
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1907
  \item \alert{Note:} By default array operations are performed
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1908
    \alert{elementwise}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1909
  \item Indices start from 0
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1910
  \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1911
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1912
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1913
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1914
  \frametitle{Examples of \num}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1915
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1916
# Simple array math example
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1917
>>> from numpy import *
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1918
>>> a = array([1,2,3,4])
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1919
>>> b = array([2,3,4,5])
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1920
>>> a + b # Element wise addition!
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1921
array([3, 5, 7, 9])
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1922
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1923
>>> print pi, e  # Pi and e are defined.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1924
3.14159265359 2.71828182846
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1925
# Create array from 0 to 10
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1926
>>> x = arange(0.0, 10.0, 0.05)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1927
>>> x *= 2*pi/10 # multiply array by scalar value
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1928
array([ 0.,0.0314,...,6.252])
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1929
# apply functions to array.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1930
>>> y = sin(x)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1931
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1932
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1933
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1934
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1935
  \frametitle{More examples of \num}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1936
\vspace*{-8pt}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1937
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1938
# Size, shape, rank, type etc.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1939
>>> x = array([1., 2, 3, 4])
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1940
>>> size(x)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1941
4
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1942
>>> x.dtype # or x.dtype.char
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1943
'd'
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1944
>>> x.shape
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1945
(4,)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1946
>>> print rank(x), x.itemsize
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1947
1 8
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1948
>>> x.tolist()
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1949
[1.0, 2.0, 3.0, 4.0]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1950
# Array indexing
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1951
>>> x[0] = 10
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1952
>>> print x[0], x[-1]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1953
10.0 4.0
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1954
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1955
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1956
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1957
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1958
  \frametitle{Multi-dimensional arrays}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1959
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1960
>>> a = array([[ 0, 1, 2, 3],
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1961
...            [10,11,12,13]])
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1962
>>> a.shape # (rows, columns)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1963
(2, 4)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1964
# Accessing and setting values
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1965
>>> a[1,3] 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1966
13
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1967
>>> a[1,3] = -1
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1968
>>> a[1] # The second row
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1969
array([10,11,12,-1])
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1970
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1971
# Flatten/ravel arrays to 1D arrays
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1972
>>> a.flat  # or ravel(a)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1973
array([0,1,2,3,10,11,12,-1])
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1974
# Note: flat references original memory
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1975
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1976
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1977
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1978
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1979
  \frametitle{Slicing arrays}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1980
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1981
>>> a = array([[1,2,3], [4,5,6], [7,8,9]])
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1982
>>> a[0,1:3]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1983
array([2, 3])
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1984
>>> a[1:,1:]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1985
array([[5, 6],
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1986
       [8, 9]])
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1987
>>> a[:,2]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1988
array([3, 6, 9])
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1989
# Striding...
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1990
>>> a[0::2,0::2]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1991
array([[1, 3],
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1992
       [7, 9]])
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1993
# All these slices are references to the same memory!
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1994
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1995
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1996
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1997
% \begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1998
%   \frametitle{Array types and typecodes}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  1999
%   \begin{tabular}[c]{|c|c|p{2.75in}|}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2000
%     \hline
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2001
%     Character & Bits (bytes) & Type name \\
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2002
%     \hline
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2003
%     D & 128 (16) & \typ{Complex, Complex64}\\
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2004
%     F & 64   (8) & \typ{Complex0, Complex8, Complex16} \\
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2005
%     d & 64   (8) & \typ{Float, Float64} \\
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2006
%     f & 32   (4) & \typ{Float0, Float8, Float16} \\
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2007
%     i & 32   (4) & \typ{Int32} \\
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2008
%     l & 32   (4) & \typ{Int} \\
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2009
%     O & 4    (1) & \typ{PyObject} \\
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2010
%     %b 8     (1) UnsignedInt8
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2011
%     %1 (one) 8     (1) Int8
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2012
%     %s 16   (2) Int16
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2013
%     \hline
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2014
%   \end{tabular}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2015
% \begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2016
% # Examples
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2017
% >>> f = array([1,2,3], Float32)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2018
% >>> c = array([1,2,3], Complex32)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2019
% >>> print f, c
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2020
% [ 1.  2.  3.] [ 1.+0.j  2.+0.j  3.+0.j]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2021
% \end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2022
% \end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2023
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2024
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2025
  \frametitle{Array creation functions}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2026
  \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2027
  \item \typ{array(object, dtype=None, copy=1,order=None, subok=0,ndmin=0)}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2028
  \item \typ{arange(start, stop=None, step=1, dtype=None)}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2029
  \item \typ{linspace(start, stop, num=50, endpoint=True, retstep=False)}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2030
  \item \typ{ones(shape, dtype=None, order='C')}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2031
  \item \typ{zeros((d1,...,dn),dtype=float,order='C')}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2032
  \item \typ{identity(n)}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2033
  \item \typ{empty((d1,...,dn),dtype=float,order='C')}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2034
  \item \typ{ones\_like(x)}, \typ{zeros\_like(x)}, \typ{empty\_like(x)}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2035
  \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2036
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2037
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2038
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2039
  \frametitle{Array math}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2040
  \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2041
  \item Basic \alert{elementwise} math (given two arrays \typ{a, b}):
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2042
    \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2043
    \item \typ{a + b $\rightarrow$ add(a, b)} 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2044
    \item \typ{a - b, $\rightarrow$ subtract(a, b)} 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2045
    \item \typ{a * b, $\rightarrow$ multiply(a, b)} 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2046
    \item \typ{a / b, $\rightarrow$ divide(a, b)} 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2047
    \item \typ{a \% b, $\rightarrow$ remainder(a, b)} 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2048
    \item \typ{a ** b, $\rightarrow$ power(a, b)}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2049
    \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2050
  \item Inplace operators: \typ{a += b}, or \typ{add(a, b,
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2051
      a)} etc.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2052
  \item Logical operations: \typ{equal (==)}, \typ{not\_equal (!=)},
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2053
    \typ{less (<)}, \typ{greater (>)} etc.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2054
  \item Trig and other functions: \typ{sin(x), arcsin(x), sinh(x),
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2055
      exp(x), sqrt(x)} etc.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2056
  \item \typ{sum(x, axis=0), product(x, axis=0)}: sum and product of array elements 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2057
  \item \typ{dot(a, b)}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2058
  \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2059
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2060
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2061
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2062
  \frametitle{Advanced}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2063
  \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2064
  \item Only scratched the surface of \num
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2065
  \item Ufunc methods: \typ{reduce, accumulate, outer, reduceat}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2066
  \item Typecasting
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2067
  \item More functions: \typ{take, choose, where, compress,
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2068
      concatenate}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2069
  \item Array broadcasting and \typ{None}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2070
  \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2071
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2072
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2073
\subsection{Plotting: Matplotlib}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2074
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2075
\begin{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2076
  \frametitle{About \texttt{matplotlib}}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2077
  \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2078
  \item Easy to use, scriptable, ``Matlab-like'' 2D plotting
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2079
  \item Publication quality figures and interactive capabilities
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2080
  \item Plots, histograms, power spectra, bar charts, errorcharts,
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2081
    scatterplots, etc.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2082
  \item Also does polar plots, maps, contours
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2083
  \item Support for simple \TeX\ markup
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2084
  \item Multiple output backends (images, EPS, SVG, wx, Agg, Tk, GTK)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2085
  \item Cross-platform: Linux, Win32, Mac OS X
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2086
  \item Good idea to use via IPython:  \typ{ipython -pylab}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2087
  \item From scripts use: \typ{import pylab}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2088
  \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2089
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2090
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2091
\begin{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2092
  \frametitle{More information}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2093
  \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2094
  \item More information here: \url{http://matplotlib.sf.net}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2095
  \item \url{http://matplotlib.sf.net/tutorial.html}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2096
  \item \url{http://matplotlib.sf.net/screenshots.html}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2097
  \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2098
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2099
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2100
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2101
  \frametitle{Basic plotting with \texttt{matplotlib}}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2102
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2103
>>> x = arange(0, 2*pi, 0.05)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2104
>>> plot(x, sin(x)) # Same as plot(x, sin(x), 'b-') 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2105
>>> plot(x, sin(x), 'ro')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2106
>>> axis([0,2*pi, -1,1])
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2107
>>> xlabel(r'$\chi$', color='g')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2108
>>> ylabel(r'sin($\chi$)', color='r')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2109
>>> title('A simple figure', fontsize=20)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2110
>>> savefig('/tmp/test.eps')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2111
# Multiple plots in one figure
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2112
>>> t = arange(0.0, 5.2, 0.2)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2113
# red dashes, blue squares and green triangles
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2114
>>> plot(t, t, 'r--', t, t**2, 'bs', t, t**3, 'g^')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2115
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2116
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2117
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2118
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2119
  \frametitle{Basic plotting \ldots}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2120
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2121
# Set properties of objects:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2122
>>> plot(x, sin(x), linewidth=2.0, color='r')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2123
>>> l, = plot(x, sin(x))
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2124
>>> setp(l, linewidth=2.0, color='r')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2125
>>> l.set_linewidth(2.0); l.set_color('r')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2126
>>> draw() # Redraws current figure.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2127
>>> setp(l) # Prints available properties
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2128
>>> close() # Closes the figure.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2129
# Multiple figures:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2130
>>> figure(1); plot(x, sin(x))
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2131
>>> figure(2); plot(x, tanh(x))
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2132
>>> figure(1); title('Easy as 1,2,3')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2133
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2134
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2135
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2136
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2137
  \frametitle{Basic plotting \ldots}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2138
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2139
>>> figure(1)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2140
>>> subplot(211) # Same as subplot(2, 1, 1)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2141
>>> plot(x, cos(5*x)*exp(-x))
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2142
>>> subplot(2, 1, 2)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2143
>>> plot(x, cos(5*x), 'r--', label='cosine')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2144
>>> plot(x, sin(5*x), 'g--', label='sine')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2145
>>> legend() # Or legend(['cosine', 'sine'])
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2146
>>> text(1,0, '(1,0)')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2147
>>> axes = gca() # Current axis
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2148
>>> fig = gcf() # Current figure
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2149
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2150
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2151
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2152
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2153
  \frametitle{X-Y plot}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2154
  \begin{columns}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2155
    \column{0.5\textwidth}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2156
    \hspace*{-0.5in}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2157
    \includegraphics[height=2in, interpolate=true]{data/xyplot}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2158
    \column{0.45\textwidth}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2159
    \begin{block}{Example code}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2160
    \tiny
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2161
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2162
t1 = arange(0.0, 5.0, 0.1)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2163
t2 = arange(0.0, 5.0, 0.02)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2164
t3 = arange(0.0, 2.0, 0.01)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2165
subplot(211)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2166
plot(t1, cos(2*pi*t1)*exp(-t1), 'bo', 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2167
     t2, cos(2*pi*t2)*exp(-t2), 'k')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2168
grid(True)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2169
title('A tale of 2 subplots')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2170
ylabel('Damped')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2171
subplot(212)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2172
plot(t3, cos(2*pi*t3), 'r--')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2173
grid(True)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2174
xlabel('time (s)')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2175
ylabel('Undamped')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2176
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2177
    \end{block}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2178
  \end{columns}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2179
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2180
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2181
\begin{frame}[fragile] \frametitle{Errorbar}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2182
  \begin{columns}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2183
    \column{0.5\textwidth}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2184
    \hspace*{-0.5in}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2185
  \includegraphics[height=2in, interpolate=true]{data/errorbar}  
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2186
    \column{0.45\textwidth}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2187
    \begin{block}{Example code}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2188
    \tiny
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2189
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2190
t = arange(0.1, 4, 0.1)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2191
s = exp(-t)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2192
e = 0.1*abs(randn(len(s)))
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2193
f = 0.1*abs(randn(len(s)))
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2194
g = 2*e
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2195
h = 2*f
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2196
errorbar(t, s, [e,g], f, fmt='o')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2197
xlabel('Distance (m)')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2198
ylabel('Height (m)')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2199
title('Mean and standard error '\
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2200
      'as a function of distance')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2201
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2202
  \end{block}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2203
\end{columns}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2204
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2205
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2206
\begin{frame}[fragile] \frametitle{Semi-log and log-log plots}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2207
  \begin{columns}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2208
    \column{0.5\textwidth}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2209
    \hspace*{-0.5in}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2210
  \includegraphics[height=2in, interpolate=true]{data/log}  
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2211
    \column{0.45\textwidth}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2212
    \begin{block}{Example code}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2213
    \tiny
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2214
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2215
dt = 0.01
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2216
t = arange(dt, 20.0, dt)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2217
subplot(311)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2218
semilogy(t, exp(-t/5.0))
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2219
ylabel('semilogy')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2220
grid(True)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2221
subplot(312)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2222
semilogx(t, sin(2*pi*t))
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2223
ylabel('semilogx')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2224
grid(True)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2225
# minor grid on too
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2226
gca().xaxis.grid(True, which='minor')  
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2227
subplot(313)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2228
loglog(t, 20*exp(-t/10.0), basex=4)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2229
grid(True)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2230
ylabel('loglog base 4 on x')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2231
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2232
  \end{block}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2233
\end{columns}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2234
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2235
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2236
\begin{frame}[fragile] \frametitle{Histogram}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2237
  \begin{columns}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2238
    \column{0.5\textwidth}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2239
    \hspace*{-0.5in}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2240
  \includegraphics[height=2in, interpolate=true]{data/histogram}  
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2241
    \column{0.45\textwidth}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2242
    \begin{block}{Example code}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2243
    \tiny
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2244
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2245
mu, sigma = 100, 15
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2246
x = mu + sigma*randn(10000)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2247
# the histogram of the data
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2248
n, bins, patches = hist(x, 100, normed=1)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2249
# add a 'best fit' line
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2250
y = normpdf( bins, mu, sigma)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2251
l = plot(bins, y, 'r--', linewidth=2)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2252
xlim(40, 160)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2253
xlabel('Smarts')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2254
ylabel('P')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2255
title(r'$\rm{IQ:}\/ \mu=100,\/ \sigma=15$')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2256
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2257
  \end{block}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2258
\end{columns}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2259
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2260
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2261
\begin{frame}[fragile] \frametitle{Bar charts}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2262
  \begin{columns}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2263
    \column{0.5\textwidth}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2264
    \hspace*{-0.5in}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2265
  \includegraphics[height=2in, interpolate=true]{data/barchart}  
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2266
    \column{0.45\textwidth}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2267
    \begin{block}{Example code}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2268
    \tiny
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2269
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2270
N = 5
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2271
menMeans = (20, 35, 30, 35, 27)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2272
menStd =   ( 2,  3,  4,  1,  2)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2273
# the x locations for the groups
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2274
ind = arange(N) 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2275
# the width of the bars
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2276
width = 0.35       
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2277
p1 = bar(ind, menMeans, width, 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2278
         color='r', yerr=menStd)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2279
womenMeans = (25, 32, 34, 20, 25)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2280
womenStd =   ( 3,  5,  2,  3,  3)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2281
p2 = bar(ind+width, womenMeans, width, 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2282
         color='y', yerr=womenStd)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2283
ylabel('Scores')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2284
title('Scores by group and gender')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2285
xticks(ind+width, 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2286
       ('G1', 'G2', 'G3', 'G4', 'G5'))
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2287
xlim(-width,len(ind))
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2288
yticks(arange(0,41,10))
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2289
legend((p1[0], p2[0]), 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2290
       ('Men', 'Women'), shadow=True)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2291
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2292
  \end{block}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2293
\end{columns}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2294
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2295
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2296
\begin{frame}[fragile] \frametitle{Pie charts}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2297
  \begin{columns}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2298
    \column{0.5\textwidth}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2299
    \hspace*{-0.4in}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2300
  \includegraphics[height=2.0in, interpolate=true]{data/piechart}  
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2301
    \column{0.45\textwidth}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2302
    \begin{block}{Example code}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2303
    \tiny
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2304
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2305
# make a square figure and axes
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2306
figure(1, figsize=(8,8))
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2307
ax = axes([0.1, 0.1, 0.8, 0.8])
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2308
labels = 'Frogs', 'Hogs', 'Dogs', 'Logs'
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2309
fracs = [15,30,45, 10]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2310
explode=(0, 0.05, 0, 0)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2311
pie(fracs, explode=explode, labels=labels, 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2312
    autopct='%1.1f%%', shadow=True)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2313
title('Raining Hogs and Dogs', 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2314
      bbox={'facecolor':'0.8', 'pad':5})
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2315
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2316
  \end{block}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2317
\end{columns}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2318
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2319
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2320
\begin{frame}[fragile] \frametitle{Scatter plots}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2321
  \begin{columns}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2322
    \column{0.5\textwidth}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2323
    \hspace*{-0.4in}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2324
  \includegraphics[height=2in, interpolate=true]{data/scatter}  
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2325
    \column{0.45\textwidth}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2326
    \begin{block}{Example code}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2327
    \tiny
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2328
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2329
N = 30
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2330
x = 0.9*rand(N)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2331
y = 0.9*rand(N)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2332
# 0 to 10 point radiuses
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2333
area = pi*(10 * rand(N))**2 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2334
volume = 400 + rand(N)*450
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2335
scatter(x,y,s=area, marker='o', c=volume, 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2336
        alpha=0.75)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2337
xlabel(r'$\Delta_i$', size='x-large')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2338
ylabel(r'$\Delta_{i+1}$', size='x-large')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2339
title(r'Volume and percent change')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2340
grid(True)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2341
colorbar()
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2342
savefig('scatter')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2343
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2344
  \end{block}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2345
\end{columns}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2346
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2347
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2348
\begin{frame}[fragile] \frametitle{Polar}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2349
  \begin{columns}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2350
    \column{0.5\textwidth}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2351
    \hspace*{-0.5in}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2352
  \includegraphics[height=2in, interpolate=true]{data/polar}  
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2353
    \column{0.45\textwidth}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2354
    \begin{block}{Example code}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2355
    \tiny
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2356
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2357
figure(figsize=(8,8))
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2358
ax = axes([0.1, 0.1, 0.8, 0.8], polar=True, 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2359
          axisbg='#d5de9c')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2360
r = arange(0,1,0.001)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2361
theta = 2*2*pi*r
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2362
polar(theta, r, color='#ee8d18', lw=3)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2363
# the radius of the grid labels
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2364
setp(ax.thetagridlabels, y=1.075) 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2365
title(r"$\theta=4\pi r", fontsize=20)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2366
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2367
  \end{block}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2368
\end{columns}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2369
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2370
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2371
\begin{frame}[fragile] \frametitle{Contours}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2372
  \begin{columns}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2373
    \column{0.45\textwidth}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2374
    \hspace*{-0.5in}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2375
  \includegraphics[height=2in, interpolate=true]{data/contour}  
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2376
    \column{0.525\textwidth}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2377
    \begin{block}{Example code}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2378
    \tiny
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2379
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2380
x = arange(-3.0, 3.0, 0.025)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2381
y = arange(-2.0, 2.0, 0.025)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2382
X, Y = meshgrid(x, y)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2383
Z1 = bivariate_normal(X, Y, 1.0, 1.0, 0.0, 0.0)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2384
Z2 = bivariate_normal(X, Y, 1.5, 0.5, 1, 1)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2385
# difference of Gaussians
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2386
Z = 10.0 * (Z2 - Z1)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2387
im = imshow(Z, interpolation='bilinear', 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2388
            origin='lower',
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2389
            cmap=cm.gray, extent=(-3,3,-2,2))
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2390
levels = arange(-1.2, 1.6, 0.2)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2391
# label every second level
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2392
clabel(CS, levels[1::2],  inline=1,
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2393
       fmt='%1.1f', fontsize=14)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2394
CS = contour(Z, levels,
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2395
             origin='lower',
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2396
             linewidths=2,
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2397
             extent=(-3,3,-2,2))
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2398
# make a colorbar for the contour lines
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2399
CB = colorbar(CS, shrink=0.8, extend='both')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2400
title('Lines with colorbar')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2401
hot(); flag()
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2402
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2403
  \end{block}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2404
\end{columns}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2405
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2406
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2407
\begin{frame}[fragile] \frametitle{Velocity vectors}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2408
  \begin{columns}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2409
    \column{0.5\textwidth}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2410
    \hspace*{-0.5in}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2411
  \includegraphics[height=2in, interpolate=true]{data/quiver}  
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2412
    \column{0.45\textwidth}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2413
    \begin{block}{Example code}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2414
    \tiny
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2415
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2416
X,Y = meshgrid(arange(0,2*pi,.2),
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2417
               arange(0,2*pi,.2) )
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2418
U = cos(X)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2419
V = sin(Y)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2420
Q = quiver(X[::3, ::3], Y[::3, ::3], 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2421
           U[::3, ::3], V[::3, ::3],
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2422
           color='r', units='x', 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2423
           linewidths=(2,), 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2424
           edgecolors=('k'), 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2425
           headaxislength=5 )
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2426
qk = quiverkey(Q, 0.5, 0.03, 1, '1 m/s', 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2427
               fontproperties=
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2428
               {'weight': 'bold'})
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2429
axis([-1, 7, -1, 7])
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2430
title('triangular head; scale '\
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2431
      'with x view; black edges')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2432
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2433
  \end{block}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2434
\end{columns}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2435
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2436
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2437
\begin{frame}[fragile] \frametitle{Maps}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2438
  \includegraphics[height=2.5in, interpolate=true]{data/plotmap}  
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2439
  \begin{center}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2440
    \tiny
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2441
    For details see \url{http://matplotlib.sourceforge.net/screenshots/plotmap.py}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2442
  \end{center}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2443
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2444
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2445
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2446
\subsection{SciPy}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2447
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2448
\begin{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2449
  \frametitle{Using \texttt{SciPy}}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2450
  \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2451
  \item SciPy is Open Source software for mathematics, science, and
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2452
    engineering
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2453
  \item \typ{import scipy}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2454
  \item Built on NumPy
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2455
  \item Provides modules for statistics, optimization, integration,
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2456
    linear algebra, Fourier transforms, signal and image processing,
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2457
    genetic algorithms, ODE solvers, special functions, and more
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2458
  \item Used widely by scientists world over
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2459
  \item Details are beyond the scope of this tutorial
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2460
  \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2461
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2462
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2463
\section{Standard library}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2464
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2465
\subsection{Quick Tour}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2466
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2467
\begin{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2468
  \frametitle{Standard library}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2469
  \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2470
  \item Very powerful
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2471
  \item ``Batteries included''
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2472
  \item Example standard modules taken from the tutorial
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2473
    \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2474
    \item Operating system interface: \typ{os}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2475
    \item System, Command line arguments: \typ{sys}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2476
    \item Regular expressions: \typ{re}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2477
    \item Math: \typ{math}, \typ{random}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2478
    \item Internet access: \typ{urllib2}, \typ{smtplib}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2479
    \item Data compression: \typ{zlib}, \typ{gzip}, \typ{bz2},
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2480
      \typ{zipfile}, and \typ{tarfile}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2481
    \item Unit testing: \typ{doctest} and \typ{unittest}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2482
    \item And a whole lot more!
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2483
    \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2484
  \item Check out the Python Library reference:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2485
    \url{http://docs.python.org/lib/lib.html}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2486
  \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2487
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2488
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2489
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2490
  \frametitle{Stdlib: examples}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2491
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2492
>>> import os
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2493
>>> os.system('date')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2494
Fri Jun 10 22:13:09 IST 2005
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2495
0
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2496
>>> os.getcwd()
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2497
'/home/prabhu'
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2498
>>> os.chdir('/tmp')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2499
>>> import os
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2500
>>> dir(os)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2501
<returns a list of all module functions>
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2502
>>> help(os)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2503
<extensive manual page from module's docstrings>
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2504
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2505
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2506
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2507
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2508
  \frametitle{Stdlib: examples}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2509
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2510
>>> import sys
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2511
>>> # Print the list of command line args to Python
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2512
... print sys.argv 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2513
['']
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2514
>>> import re # Regular expressions
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2515
>>> re.findall(r'\bf[a-z]*', 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2516
... 'which foot or hand fell fastest')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2517
['foot', 'fell', 'fastest']
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2518
>>> re.sub(r'(\b[a-z]+) \1', r'\1', 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2519
... 'cat in the the hat')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2520
'cat in the hat'
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2521
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2522
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2523
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2524
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2525
  \frametitle{Stdlib: examples}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2526
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2527
>>> import math
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2528
>>> math.cos(math.pi / 4.0)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2529
0.70710678118654757
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2530
>>> math.log(1024, 2)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2531
10.0
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2532
>>> import random
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2533
>>> random.choice(['apple', 'pear', 'banana'])
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2534
'pear'
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2535
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2536
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2537
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2538
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2539
  \frametitle{Stdlib: examples}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2540
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2541
>>> import urllib2
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2542
>>> f = urllib2.urlopen('http://www.python.org/')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2543
>>> print f.read(100)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2544
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2545
<?xml-stylesheet href="./css/ht2html
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2546
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2547
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2548
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2549
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2550
  \frametitle{Stdlib: examples}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2551
\begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2552
>>> import zlib
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2553
>>> s = 'witch which has which witches wrist watch'
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2554
>>> len(s)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2555
41
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2556
>>> t = zlib.compress(s)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2557
>>> len(t)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2558
37
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2559
>>> zlib.decompress(t)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2560
'witch which has which witches wrist watch'
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2561
>>> zlib.crc32(t)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2562
-1438085031
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2563
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2564
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2565
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2566
\begin{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2567
  \frametitle{Summary}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2568
  \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2569
  \item Introduced Python
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2570
  \item Basic syntax
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2571
  \item Basic types and data structures
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2572
  \item Control flow
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2573
  \item Functions
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2574
  \item Modules
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2575
  \item Exceptions
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2576
  \item Classes
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2577
  \item Standard library
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2578
  \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2579
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2580
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2581
\end{document}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2582
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2583
\subsection{Basic data structures}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2584
\begin{frame}{Lists}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2585
  \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2586
    \item \texttt{species = [ 'humans', 'orcs', 'elves', 'dwarves' ]}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2587
    \item \texttt{ ids = [ 107, 109, 124, 141, 142, 144 ]}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2588
    \item \texttt{ oneliners = [ 'I will be back', 'Do or do not! No try!!', 42 ] }
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2589
  \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2590
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2591
  \begin{block}{List operations}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2592
    ids + [ 100, 102 ]\\
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2593
    species.append( 'unicorns')\\
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2594
    print oneliners[ 1 ]\\
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2595
    look up \alert{docs.python.org/tutorial/datastructures.html}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2596
  \end{block}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2597
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2598
\end{document}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2599
\section{Python Tutorial}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2600
\subsection{Preliminaries}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2601
\begin{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2602
  \frametitle{Using the interpreter}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2603
  \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2604
  \item Starting up: \typ{python} or \typ{ipython}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2605
  \item Quitting: \typ{Control-D} or \typ{Control-Z} (on Win32)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2606
  \item Can use it like a calculator
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2607
  \item Can execute one-liners via the \typ{-c} option:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2608
    \typ{python -c "print 'hello world'"}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2609
  \item Other options via \typ{python -h}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2610
  \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2611
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2612
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2613
\begin{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2614
  \frametitle{IPython}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2615
  \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2616
  \item Recommended interpreter, IPython:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2617
    \url{http://ipython.scipy.org}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2618
  \item Better than the default Python shell
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2619
  \item Supports tab completion by default
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2620
  \item Easier object introspection
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2621
  \item Shell access!
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2622
  \item Command system to allow extending its own behavior
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2623
  \item Supports history (across sessions) and logging
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2624
  \item Can be embedded in your own Python code
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2625
  \item Support for macros
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2626
  \item A flexible framework for your own custom interpreter
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2627
  \item Other miscellaneous conveniences
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2628
  \item We'll get back to this later
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2629
  \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2630
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2631
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2632
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2633
  \frametitle{Basic IPython features}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2634
  \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2635
  \item Startup: \verb+ipython [options] files+
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2636
    \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2637
    \item \verb+ipython [-wthread|-gthread|-qthread]+:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2638
      Threading modes to support wxPython, pyGTK and Qt
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2639
    \item \verb+ipython -pylab+: Support for matplotlib
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2640
    \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2641
  \item TAB completion:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2642
    \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2643
    \item Type \verb+object_name.<TAB>+ to see list of options
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2644
    \item Also completes on file and directory names
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2645
    \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2646
  \item \verb+object?+ shows docstring/help for any Python object
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2647
  \item \verb+object??+ presents more docs (and source if possible)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2648
  \item Debugging with \verb+%pdb+ magic: pops up pdb on errors
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2649
  \item Access history (saved over earlier sessions also)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2650
    \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2651
    \item Use \texttt{<UpArrow>}: move up history
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2652
    \item Use \texttt{<Ctrl-r> string}: search history backwards
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2653
    \item Use \texttt{Esc >}: get back to end of history
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2654
    \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2655
  \item \verb+%run [options] file[.py]+ lets you run Python code
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2656
  \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2657
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2658
% LocalWords:  BDFL Guido Rossum PSF Nokia OO Zope CMS RedHat SciPy MayaVi spam
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2659
% LocalWords:  IPython ipython stdin TypeError dict int elif PYTHONPATH IOError
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2660
% LocalWords:  namespace Namespaces SyntaxError ZeroDivisionError NameError str
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2661
% LocalWords:  ValueError subclassed def
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2662
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2663
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2664
  \item Types are of two kinds: \alert{mutable} and \alert{immutable}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2665
  \item Immutable types: numbers, strings, \typ{None} and tuples
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2666
  \item Immutables cannot be changed ``in-place''
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2667
  \item Mutable types: lists, dictionaries, instances, etc.
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2668
  \item Mutable objects can be ``changed''
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2669
  \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2670
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2671
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2672
\begin{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2673
  \frametitle{Important!}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2674
  \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2675
    \item Assignment to an object is by reference
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2676
    \item Essentially, \alert{names are bound to objects}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2677
  \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2678
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2679
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2680
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2681
\end{document}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2682
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2683
  \frametitle{Dictionaries}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2684
  \begin{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2685
  \item Associative arrays/mappings
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2686
  \item Indexed by ``keys'' (keys must be immutable)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2687
  \item \typ{dict[key] = value}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2688
  \item \typ{keys()} returns all keys of the dict
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2689
  \item \typ{values()} returns the values of the dict
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2690
  \item \verb+has_key(key)+ returns if \typ{key} is in the dict
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2691
  \end{itemize}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2692
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2693
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2694
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2695
  \frametitle{Dictionaries: example}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2696
  \begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2697
>>> tel = {'jack': 4098, 'sape': 4139}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2698
>>> tel['guido'] = 4127
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2699
>>> tel
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2700
{'sape': 4139, 'guido': 4127, 'jack': 4098}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2701
>>> tel['jack']
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2702
4098
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2703
>>> del tel['sape']
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2704
>>> tel['irv'] = 4127
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2705
>>> tel
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2706
{'guido': 4127, 'irv': 4127, 'jack': 4098}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2707
>>> tel.keys()
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2708
['guido', 'irv', 'jack']
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2709
>>> tel.has_key('guido')
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2710
True
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2711
  \end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2712
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2713
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2714
\subsection{Control flow, functions}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2715
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2716
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2717
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2718
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2719
  \frametitle{\typ{If} example}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2720
  \begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2721
>>> a = ['cat', 'window', 'defenestrate']
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2722
>>> if 'cat' in a:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2723
...    print "meaw"
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2724
...
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2725
meaw
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2726
>>> pets = {'cat': 1, 'dog':2, 'croc': 10}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2727
>>> if 'croc' in pets:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2728
...    print pets['croc']
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2729
...
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2730
10
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2731
  \end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2732
\end{frame}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2733
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2734
\begin{frame}[fragile]
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2735
  \frametitle{\typ{for} example}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2736
  \begin{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2737
>>> a = ['cat', 'window', 'defenestrate']
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2738
>>> for x in a:
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2739
...     print x, len(x)
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2740
...
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2741
cat 3
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2742
window 6
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2743
defenestrate 12
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2744
>>> knights = {'gallahad': 'the pure', 
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2745
... 'robin': 'the brave'}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2746
>>> for k, v in knights.iteritems():
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2747
...     print k, v
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2748
...
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2749
gallahad the pure
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2750
robin the brave
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2751
\end{lstlisting}
838cedef5e9d Added 4 tex slides for 4 sessions of Day 1 of the workshop.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
  2752
\end{frame}