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%Tutorial slides on Python.

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% Author: The FOSSEE Group

% Copyright (c) 2009, The FOSSEE Group, IIT Bombay

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% Taken from Fernando's slides.

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\usepackage[scaled=.95]{helvet}

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\usepackage{listings}

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  stringstyle=\color{darkgreen},

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  keywordstyle=\color{blue}\bfseries}

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%%% This is from Fernando's setup.

% \usepackage{color}

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% % Use and configure listings package for nicely formatted code

% \usepackage{listings}

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% Title page

\author[FOSEE Team] {The FOSSEE Group}

\institute[IIT Bombay] {Department of Aerospace Engineering\\IIT Bombay}

\date[] {31, October 2009\\Day 1, Session 2}

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%% Delete this, if you do not want the table of contents to pop up at

%% the beginning of each subsection:

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  \begin{frame}<beamer>

    \frametitle{Outline}

    \tableofcontents[currentsection,currentsubsection]

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    \frametitle{Outline}

    \tableofcontents[currentsection,currentsubsection]

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% DOCUMENT STARTS

\begin{document}

\begin{frame}

  \titlepage

\end{frame}

\begin{frame}

  \frametitle{Outline}

  \tableofcontents

  % You might wish to add the option [pausesections]

\end{frame}

\section{Functions}

\begin{frame}{Functions: Definition}

\begin{itemize}

  \item \kwrd{def} keyword

\end{itemize}

\end{frame}

\begin{frame}[fragile]

\frametitle{Functions: Example 1}

  \begin{lstlisting}

In []: def plot_sinx():

   ....:     x = linspace(0, 2*pi, 100)

   ....:     plt.plot(x, sin(x))

   ....:     plt.show()

   ....:    

In []: plot_sinx()

  \end{lstlisting}

\end{frame}

\begin{frame}[fragile]

\frametitle{Functions: Example 2}

  \begin{lstlisting}

In []: def f(x):

   ....:     return sin(x*x*x)+(3*x*x)

In []: x = linspace(0,2*pi, 1000)

In []: plt.plot(x, f(x))

  \end{lstlisting}

  \inctime{10}

\end{frame}

\section{Creating and running scripts}

\begin{frame}

  {Creating python files}

  \begin{itemize}

    \item use your editor

    \item extension \typ{.py}

    \item in IPython using \kwrd{\%run}

  \end{itemize}

\inctime{5}

\end{frame}

\section{File Handling}

\begin{frame}[fragile]

    \frametitle{File and \kwrd{for}}

\begin{lstlisting}

In []: f = open('dummyfile')

In []: for line in f:

    ...:     print line

    ...:  

\end{lstlisting}

\inctime{5}

\end{frame}

\section{Strings}

\begin{frame}{Strings}

Anything within ``quotes'' is a string!

\end{frame}

\begin{frame}[fragile]\frametitle{Strings and \typ{split()}}

  \begin{lstlisting}

In []: a = 'hello world'

In []: a.split()

Out[]: ['hello', 'world']

  \end{lstlisting}

Now try this:

  \begin{lstlisting}

In []: b = 'KD, MCS, PC, SC, SV'

In []: b.split(',')

Out[]: ['KD', 'MCS', 'PC', 'SC', 'SV']

  \end{lstlisting}

\inctime{5}

\end{frame}

\section{Plotting points}

\begin{frame}[fragile]

\frametitle{How to plot points?}

\begin{lstlisting}

In []: plt.plot(x, sin(x), 'ro')

Out[]: [<matplotlib.lines.Line2D object at 0xac17e0c>]

\end{lstlisting}

\begin{itemize}

  \item \kwrd{'r'},\kwrd{'g'},\kwrd{'b'} for red, green and blue

  \item \kwrd{'o'} - Dots

  \item \kwrd{'-'} - Lines

  \item \kwrd{'- -'} - Dashed lines

\end{itemize}

\inctime{5}

\end{frame}

\section{Lists}

\begin{frame}[fragile]

  \frametitle{List creation and indexing}

\begin{lstlisting}

In []: lst = [1,2,3,4] 

In []: lst[0]+lst[1]+lst[-1]

Out[]: 7

\end{lstlisting}

\begin{itemize}

  \item Indices start with ?

  \item Negative indices indicate ?

  \end{itemize}

\end{frame}

\begin{frame}[fragile]

  \frametitle{List: slices}

  \typ{list[initial:final:step]}

\begin{lstlisting}

In []: lst[1:3]  # A slice.

Out[]: [2, 3]

In []: lst[1:-1]

Out[]: [2, 3]

\end{lstlisting}

\end{frame}

\begin{frame}[fragile]

  \frametitle{List methods}

\begin{lstlisting}

In []: lst.append([6,7])

In []: lst

Out[]: [1, 2, 3, 4, 5, [6, 7]]

\end{lstlisting}

\inctime{10}

\end{frame}

\section{Modules and import}

\begin{frame}{Modules and \typ{import}}

  \begin{itemize}

    \item \kwrd{import} x

    \item \kwrd{from} x \kwrd{import} y

  \end{itemize}

\pause

Whats the difference??

\inctime{5}

\end{frame}

\end{document}