day2/cheatsheet3.tex
author Santosh G. Vattam <vattam.santosh@gmail.com>
Wed, 18 Nov 2009 17:14:33 +0530
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Minor edits to cheatsheet session 2 day 1.
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\documentclass[12pt]{article}
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\title{Python: Data Structures}
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\author{FOSSEE}
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\usepackage{listings}
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\lstset{language=Python,
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    basicstyle=\ttfamily,
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commentstyle=\itshape\bfseries, 
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showstringspaces=false
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}
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\newcommand{\typ}[1]{\lstinline{#1}}
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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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\usepackage{ae,aecompl}
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\usepackage{mathpazo,courier,euler}
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\usepackage[scaled=.95]{helvet}
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\begin{document}
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\date{}
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\vspace{-1in}
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\begin{center}
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\LARGE{Python: Functions and Objects}\\
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\large{FOSSEE}
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\end{center}
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\section{Functions}
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Function definition
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  \begin{lstlisting}
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def signum( r ):    
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    if r < 0:
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        return -1
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    elif r > 0:
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        return 1
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    else:
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        return 0
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  \end{lstlisting}
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Default Arguments 
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\begin{lstlisting}
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def welcome(greet, name='world!'):
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    print greet, name
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\end{lstlisting}
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Keyword Arguments
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\begin{lstlisting}
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In []: plot(y, sin(y), 'g', linewidth=2)
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\end{lstlisting}
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Self contained python script
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  \begin{lstlisting}
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from scipy import linspace, pi, sin
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from pylab import plot, legend, annotate
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from pylab import xlim, ylim
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x = linspace(-5*pi, 5*pi, 500)
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plot(x, x, 'b')
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plot(x, -x, 'b')
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plot(x, sin(x), 'g', linewidth=2)
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plot(x, x*sin(x), 'r', linewidth=3)
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legend(['x', '-x', 'sin(x)', 'xsin(x)'])
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annotate('origin', xy = (0, 0))
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xlim(-5*pi, 5*pi)
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ylim(-5*pi, 5*pi)
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  \end{lstlisting}
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\end{document}