# HG changeset patch # User Puneeth Chaganti # Date 1286738830 -19800 # Node ID 08638b1e211e0e95862fea158b81dad60f132e02 # Parent bb4ed72f3ec68f4fa3db4bc9472434ce6e507443 Slides for advanced features of functions LO. diff -r bb4ed72f3ec6 -r 08638b1e211e advanced-features-functions/script.rst --- a/advanced-features-functions/script.rst Mon Oct 11 00:54:10 2010 +0530 +++ b/advanced-features-functions/script.rst Mon Oct 11 00:57:10 2010 +0530 @@ -103,7 +103,7 @@ %%1%% Redefine the function ``welcome``, by interchanging it's arguments. Place the ``name`` argument with it's default value of -"Hello" before the ``greet`` argument. +"World" before the ``greet`` argument. Please, pause the video here. Do the exercise and then continue. @@ -142,7 +142,7 @@ welcome() - + Let us now learn what keyword arguments are. diff -r bb4ed72f3ec6 -r 08638b1e211e advanced-features-functions/slides.org --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/advanced-features-functions/slides.org Mon Oct 11 00:57:10 2010 +0530 @@ -0,0 +1,86 @@ +#+LaTeX_CLASS: beamer +#+LaTeX_CLASS_OPTIONS: [presentation] +#+BEAMER_FRAME_LEVEL: 1 + +#+BEAMER_HEADER_EXTRA: \usetheme{Warsaw}\usecolortheme{default}\useoutertheme{infolines}\setbeamercovered{transparent} +#+COLUMNS: %45ITEM %10BEAMER_env(Env) %10BEAMER_envargs(Env Args) %4BEAMER_col(Col) %8BEAMER_extra(Extra) +#+PROPERTY: BEAMER_col_ALL 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 :ETC + +#+LaTeX_CLASS: beamer +#+LaTeX_CLASS_OPTIONS: [presentation] + +#+LaTeX_HEADER: \usepackage[english]{babel} \usepackage{ae,aecompl} +#+LaTeX_HEADER: \usepackage{mathpazo,courier,euler} \usepackage[scaled=.95]{helvet} + +#+LaTeX_HEADER: \usepackage{listings} + +#+LaTeX_HEADER:\lstset{language=Python, basicstyle=\ttfamily\bfseries, +#+LaTeX_HEADER: commentstyle=\color{red}\itshape, stringstyle=\color{darkgreen}, +#+LaTeX_HEADER: showstringspaces=false, keywordstyle=\color{blue}\bfseries} + +#+TITLE: Advanced features of functions +#+AUTHOR: FOSSEE +#+EMAIL: +#+DATE: + +#+DESCRIPTION: +#+KEYWORDS: +#+LANGUAGE: en +#+OPTIONS: H:3 num:nil toc:nil \n:nil @:t ::t |:t ^:t -:t f:t *:t <:t +#+OPTIONS: TeX:t LaTeX:nil skip:nil d:nil todo:nil pri:nil tags:not-in-toc + +* Outline + - Assigning default values to arguments + - Calling functions using Keyword arguments + - functions in standard library +* Question 1 + Redefine the function ~welcome~, by interchanging it's + arguments. Place the ~name~ argument with it's default value of + "World" before the ~greet~ argument. +* Solution 1 + #+begin_src python + def welcome(name="World", greet): + print greet, name + #+end_src + We get an error that reads ~SyntaxError: non-default argument + follows default argument~. When defining a function all the + argument with default values should come at the end. + +* Question 2 + See the definition of linspace using ~?~ and observe how all the + arguments with default values are towards the end. +* Solution 2 + #+begin_src python + linspace? + #+end_src +* Question 3 + Redefine the function ~welcome~ with a default value of + "Hello" to the ~greet~ argument. Then, call the function without any + arguments. +* Solution 3 + #+begin_src python + def welcome(greet="Hello", name="World"): + print greet, name + + welcome() + #+end_src +* Summary + You should now be able to -- + + define functions with default arguments + + call functions using keyword arguments +* Thank you! +#+begin_latex + \begin{block}{} + \begin{center} + This spoken tutorial has been produced by the + \textcolor{blue}{FOSSEE} team, which is funded by the + \end{center} + \begin{center} + \textcolor{blue}{National Mission on Education through \\ + Information \& Communication Technology \\ + MHRD, Govt. of India}. + \end{center} + \end{block} +#+end_latex + + diff -r bb4ed72f3ec6 -r 08638b1e211e advanced-features-functions/slides.tex --- a/advanced-features-functions/slides.tex Mon Oct 11 00:54:10 2010 +0530 +++ b/advanced-features-functions/slides.tex Mon Oct 11 00:57:10 2010 +0530 @@ -1,95 +1,125 @@ -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%Tutorial slides on Python. -% -% Author: FOSSEE -% Copyright (c) 2009, FOSSEE, IIT Bombay -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% - -\documentclass[14pt,compress]{beamer} -%\documentclass[draft]{beamer} -%\documentclass[compress,handout]{beamer} -%\usepackage{pgfpages} -%\pgfpagesuselayout{2 on 1}[a4paper,border shrink=5mm] - -% Modified from: generic-ornate-15min-45min.de.tex -\mode -{ - \usetheme{Warsaw} - \useoutertheme{infolines} - \setbeamercovered{transparent} -} - -\usepackage[english]{babel} +% Created 2010-10-11 Mon 00:34 +\documentclass[presentation]{beamer} \usepackage[latin1]{inputenc} -%\usepackage{times} \usepackage[T1]{fontenc} - -\usepackage{ae,aecompl} -\usepackage{mathpazo,courier,euler} -\usepackage[scaled=.95]{helvet} +\usepackage{fixltx2e} +\usepackage{graphicx} +\usepackage{longtable} +\usepackage{float} +\usepackage{wrapfig} +\usepackage{soul} +\usepackage{textcomp} +\usepackage{marvosym} +\usepackage{wasysym} +\usepackage{latexsym} +\usepackage{amssymb} +\usepackage{hyperref} +\tolerance=1000 +\usepackage[english]{babel} \usepackage{ae,aecompl} +\usepackage{mathpazo,courier,euler} \usepackage[scaled=.95]{helvet} +\usepackage{listings} +\lstset{language=Python, basicstyle=\ttfamily\bfseries, +commentstyle=\color{red}\itshape, stringstyle=\color{darkgreen}, +showstringspaces=false, keywordstyle=\color{blue}\bfseries} +\providecommand{\alert}[1]{\textbf{#1}} -\definecolor{darkgreen}{rgb}{0,0.5,0} - -\usepackage{listings} -\lstset{language=Python, - basicstyle=\ttfamily\bfseries, - commentstyle=\color{red}\itshape, - stringstyle=\color{darkgreen}, - showstringspaces=false, - keywordstyle=\color{blue}\bfseries} - -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -% Macros -\setbeamercolor{emphbar}{bg=blue!20, fg=black} -\newcommand{\emphbar}[1] -{\begin{beamercolorbox}[rounded=true]{emphbar} - {#1} - \end{beamercolorbox} -} -\newcounter{time} -\setcounter{time}{0} -\newcommand{\inctime}[1]{\addtocounter{time}{#1}{\tiny \thetime\ m}} - -\newcommand{\typ}[1]{\lstinline{#1}} - -\newcommand{\kwrd}[1]{ \texttt{\textbf{\color{blue}{#1}}} } - -% Title page -\title{Your Title Here} - -\author[FOSSEE] {FOSSEE} - -\institute[IIT Bombay] {Department of Aerospace Engineering\\IIT Bombay} +\title{Advanced features of functions} +\author{FOSSEE} \date{} -% DOCUMENT STARTS +\usetheme{Warsaw}\usecolortheme{default}\useoutertheme{infolines}\setbeamercovered{transparent} \begin{document} +\maketitle + + + + + + + + + \begin{frame} - \maketitle +\frametitle{Outline} +\label{sec-1} + +\begin{itemize} +\item Assigning default values to arguments +\item Calling functions using Keyword arguments +\item functions in standard library +\end{itemize} \end{frame} +\begin{frame} +\frametitle{Question 1} +\label{sec-2} + Redefine the function \texttt{welcome}, by interchanging it's + arguments. Place the \texttt{name} argument with it's default value of + ``World'' before the \texttt{greet} argument. +\end{frame} \begin{frame}[fragile] - \frametitle{Outline} - \begin{itemize} - \item - \end{itemize} +\frametitle{Solution 1} +\label{sec-3} + +\lstset{language=Python} +\begin{lstlisting} +def welcome(name="World", greet): + print greet, name +\end{lstlisting} + We get an error that reads \texttt{SyntaxError: non-default argument follows default argument}. When defining a function all the + argument with default values should come at the end. \end{frame} +\begin{frame} +\frametitle{Question 2} +\label{sec-4} + + See the definition of linspace using \texttt{?} and observe how all the + arguments with default values are towards the end. +\end{frame} +\begin{frame}[fragile] +\frametitle{Solution 2} +\label{sec-5} -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% All other slides here. %% -%% The same slides will be used in a classroom setting. %% -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +\lstset{language=Python} +\begin{lstlisting} +linspace? +\end{lstlisting} +\end{frame} +\begin{frame} +\frametitle{Question 3} +\label{sec-6} + Redefine the function \texttt{welcome} with a default value of + ``Hello'' to the \texttt{greet} argument. Then, call the function without any + arguments. +\end{frame} \begin{frame}[fragile] - \frametitle{Summary} - \begin{itemize} - \item - \end{itemize} +\frametitle{Solution 3} +\label{sec-7} + +\lstset{language=Python} +\begin{lstlisting} +def welcome(greet="Hello", name="World"): + print greet, name + +welcome() +\end{lstlisting} \end{frame} - \begin{frame} - \frametitle{Thank you!} +\frametitle{Summary} +\label{sec-8} + + You should now be able to -- +\begin{itemize} +\item define functions with default arguments +\item call functions using keyword arguments +\end{itemize} +\end{frame} +\begin{frame} +\frametitle{Thank you!} +\label{sec-9} + \begin{block}{} \begin{center} This spoken tutorial has been produced by the