day1/session2.tex
author Puneeth Chaganti <punchagan@fossee.in>
Fri, 23 Oct 2009 10:21:27 +0530
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%Tutorial slides on Python.
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%
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% Author: FOSSEE 
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% Copyright (c) 2009, FOSSEE, IIT Bombay
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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\bfseries,
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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]{\lstinline{#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]{Basic Overview\\}
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\author[FOSSEE] {FOSSEE}
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\institute[IIT Bombay] {Department of Aerospace Engineering\\IIT Bombay}
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\date[] {31, October 2009\\Day 1, Session 2}
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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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\AtBeginSection[]
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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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  \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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\section{Functions}
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\begin{frame}{Functions: Definition}
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\begin{itemize}
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  \item \kwrd{def} keyword
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\end{itemize}
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\end{frame}
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\begin{frame}[fragile]
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\frametitle{Functions: Example 1}
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  \begin{lstlisting}
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In []: def plot_sinx():
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   ....:     x = linspace(0, 2*pi, 100)
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   ....:     plt.plot(x, sin(x))
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   ....:     plt.show()
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   ....:    
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In []: plot_sinx()
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  \end{lstlisting}
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\end{frame}
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\begin{frame}[fragile]
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\frametitle{Functions: Example 2}
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  \begin{lstlisting}
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In []: def f(x):
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   ....:     return sin(x*x*x)+(3*x*x)
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In []: x = linspace(0,2*pi, 1000)
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In []: plt.plot(x, f(x))
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  \end{lstlisting}
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  \inctime{10}
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\end{frame}
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\section{Creating and running scripts}
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\begin{frame}
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  {Creating python files}
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  \begin{itemize}
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    \item use your editor
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    \item extension \typ{.py}
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    \item in IPython using \kwrd{\%run}
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  \end{itemize}
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\inctime{5}
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\end{frame}
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\section{File Handling}
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\begin{frame}[fragile]
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    \frametitle{File and \kwrd{for}}
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\begin{lstlisting}
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In []: f = open('dummyfile')
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In []: for line in f:
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    ...:     print line
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    ...:  
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\end{lstlisting}
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\inctime{5}
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\end{frame}
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\section{Strings}
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\begin{frame}{Strings}
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Anything within ``quotes'' is a string!
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\end{frame}
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\begin{frame}[fragile]\frametitle{Strings and \typ{split()}}
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  \begin{lstlisting}
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In []: a = 'hello world'
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In []: a.split()
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Out[]: ['hello', 'world']
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  \end{lstlisting}
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Now try this:
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  \begin{lstlisting}
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In []: b = 'KD, MCS, PC, SC, SV'
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In []: b.split(',')
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Out[]: ['KD', 'MCS', 'PC', 'SC', 'SV']
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  \end{lstlisting}
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\inctime{5}
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\end{frame}
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\section{Plotting points}
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\begin{frame}[fragile]
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\frametitle{How to plot points?}
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\begin{lstlisting}
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In []: plt.plot(x, sin(x), 'ro')
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Out[]: [<matplotlib.lines.Line2D object at 0xac17e0c>]
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\end{lstlisting}
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\begin{itemize}
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  \item \kwrd{'r'},\kwrd{'g'},\kwrd{'b'} for red, green and blue
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  \item \kwrd{'o'} - Dots
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  \item \kwrd{'-'} - Lines
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  \item \kwrd{'- -'} - Dashed lines
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\end{itemize}
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\inctime{5}
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\end{frame}
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\section{Lists}
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\begin{frame}[fragile]
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  \frametitle{List creation and indexing}
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\begin{lstlisting}
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In []: lst = [1,2,3,4] 
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In []: lst[0]+lst[1]+lst[-1]
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Out[]: 7
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\end{lstlisting}
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\begin{itemize}
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  \item Indices start with ?
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  \item Negative indices indicate ?
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  \end{itemize}
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\end{frame}
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\begin{frame}[fragile]
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  \frametitle{List: slices}
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  \typ{list[initial:final:step]}
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\begin{lstlisting}
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In []: lst[1:3]  # A slice.
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Out[]: [2, 3]
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130
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In []: lst[1:-1]
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Out[]: [2, 3]
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\end{lstlisting}
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\end{frame}
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\begin{frame}[fragile]
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  \frametitle{List methods}
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\begin{lstlisting}
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In []: lst.append([6,7])
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In []: lst
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Out[]: [1, 2, 3, 4, 5, [6, 7]]
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\end{lstlisting}
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\inctime{10}
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\end{frame}
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\section{Modules and import}
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\begin{frame}{Modules and \typ{import}}
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  \begin{itemize}
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    \item \kwrd{import} x
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    \item \kwrd{from} x \kwrd{import} y
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  \end{itemize}
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\pause
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Whats the difference??
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\inctime{5}
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\end{frame}
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\end{document}