--- a/using python modules/script.rst	Tue Oct 12 16:26:36 2010 +0530
+++ b/using python modules/script.rst	Tue Oct 12 17:15:11 2010 +0530
@@ -17,7 +17,8 @@
 {{{ switch to next slide, outline slide }}}
 
 In this tutorial, we will see how to run python scripts from command
-line, importing modules, importing scipy and pylab modules.
+line, importing modules, importing scipy and pylab modules. And also
+see the Python standard library.
 
 {{{ switch to next slide on executing python scripts from command line }}}
 
@@ -48,6 +49,8 @@
 
 {{{ open terminal and navigate to directory where hello.py was saved }}}
 
+{{{ switch to next slide }}}
+
 now run the Python script as,
 ::
 
@@ -59,6 +62,8 @@
 
 The syntax is python space filename.
 
+{{{ switch to next slide, four plot problem }}}
+
 Now recall the four plot problem where we plotted four plots in a single
 figure. Let us run that script from command line.
 
@@ -87,6 +92,8 @@
 So now let us try to fix the problem and run the script in command
 line,
 
+{{{ switch to next slide, fix ``linspace`` problem }}}
+
 add the following line as the first line in the script,
 {{{ add the line as first line in four_plot.py and save }}}
 ::
@@ -100,6 +107,9 @@
 
 Now it gave another error plot not defined, let us edit the file again
 and add the line below the line we just added,
+
+{{{ switch to next slide, fix ``plot`` problem }}}
+
 {{{ add the line as second line in four_plot.py and save }}}
 ::
 
@@ -115,6 +125,8 @@
 We actually imported the required modules using the keyword ``import``.
 It could have also be done as,
 
+{{{ switch to next slide, better way of fixing }}}
+
 {{{ highlight the following in slide and say it loud }}}
 ::
 
@@ -130,29 +142,26 @@
 module then it will replace any existing functions with the same name
 in our name-space.
 
+{{{ switch to next slide, Instead of ``*`` }}}
+
 So let us modify four_plot.py as,
 {{{ delete the first two lines and add the following }}}
 ::
 
     from scipy import linspace, pi, sin
-    from pylab import plot, legend, annotate, title, show
-    from pylab import xlim, ylim
+    from pylab import plot, legend, annotate
+    from pylab import xlim, ylim, title, show
+
+Now let us try running the code again as,
+::
+
+    python four_plot.py
+
+It works! In this method we actually imported the functions to the
+current name-space, and there is another method of doing it. And that
+is,
 
 {{{ switch to next slide }}}
-it could also be done as,
-
-..     import scipy
-..     import pylab
-..     x = scipy.linspace(-5*scipy.pi, 5*scipy.pi, 500)
-..     pylab.plot(x, x, 'b')
-..     pylab.plot(x, -x, 'b')
-..     pylab.plot(x, scipy.sin(x), 'g', linewidth=2)
-..     pylab.plot(x, x*scipy.sin(x), 'r', linewidth=3)
-..     pylab.legend(['x', '-x', 'sin(x)', 'xsin(x)'])
-..     pylab.annotate('origin', xy = (0, 0))
-..     pylab.xlim(-5*scipy.pi, 5*scipy.pi)
-..     pylab.ylim(-5*scipy.pi, 5*scipy.pi)
-
 
 Notice that we use ``scipy.pi`` instead of just ``pi`` as in the
 previous method, and the functions are called as ``pylab.plot()`` and
@@ -211,7 +220,7 @@
 The modules pylab, scipy, Mayavi are not part of the standard python
 library.
 
-{{{ switch to next slide, recap }}}
+{{{ switch to next slide, summary }}}
 
 This brings us to the end of this tutorial, in this tutorial we
 learned running scripts from command line, learned about modules, saw

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/using python modules/slides.org	Tue Oct 12 17:15:11 2010 +0530
@@ -0,0 +1,125 @@
+#+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: Using python modules
+#+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
+  - Running python scripts from command line
+  - Importing python modules
+  - Importing scipy \& pylab modules
+  - About python standard library.
+* Running Python script from command line
+  - Create a script, open text editor and type the following
+    : print "hello world!"
+    : print 
+  - Save the script as ~hello.py~
+* Running Python script from command line (cont'd)
+  - Run the script
+    : $ python hello.py
+  /Syntax :/ *python filename*
+* Four plot problem
+  #+begin_latex
+    \begin{center}
+      \includegraphics[scale=0.4]{four_plot}    
+    \end{center}
+  #+end_latex   
+* Fix ~linspace()~ problem
+  : from scipy import *
+* Fix ~plot()~ problem
+  : from pylab import *
+* Better way of fixing
+  : from scipy import linspace
+  instead of
+  : from scipy import *
+    ~*~ means import all functions from name-space ~scipy~.
+* Instead of ~*~
+  :  from scipy import linspace, pi, sin
+  :  from pylab import plot, legend, annotate
+  :  from pylab import xlim, ylim, title, show
+  Is better than, ~from scipy import *~ \& ~from pylab import *~.
+* Another Fix
+  #+begin_src python
+    import scipy
+    import pylab
+    x = scipy.linspace(-5*scipy.pi, 5*scipy.pi, 500)
+    pylab.plot(x, x, 'b')
+    pylab.plot(x, -x, 'b')
+    pylab.plot(x, scipy.sin(x), 'g', linewidth=2)
+    pylab.plot(x, x*scipy.sin(x), 'r', linewidth=3)
+    pylab.legend(['x', '-x', 'sin(x)', 'xsin(x)'])
+    pylab.annotate('origin', xy = (0, 0))
+    pylab.xlim(-5*scipy.pi, 5*scipy.pi)
+    pylab.ylim(-5*scipy.pi, 5*scipy.pi)
+  #+end_src
+* Exercise 1
+  Write a python script to plot a sine wave from 
+  #+begin_latex
+    $-2\Pi$
+  #+end_latex
+  to 
+  #+begin_latex
+    $2\Pi$
+  #+end_latex
+  .
+* What is a module?
+  Module is simply a file containing Python definitions and
+  statements. Definitions from a module can be imported into other
+  modules or into the main module.
+* Python standard library
+  Python has a very rich standard library of modules.
+  - Few libraries
+    - Math: ~math~, ~random~
+    - Internet access: ~urllib2~, ~smtplib~
+    - System, Command line arguments: ~sys~
+    - Operating system interface: ~os~
+    - regular expressions: ~re~
+    - compression: ~gzip~, ~zipfile~, ~tarfile~
+  - More information
+    - [[http://docs.python.org/library]]
+* Summary
+  - Running scripts from command line
+  - Learned about modules
+    - importing modules
+  - Python standard library
+* 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
+
+

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/using python modules/slides.tex	Tue Oct 12 17:15:11 2010 +0530
@@ -0,0 +1,227 @@
+% Created 2010-10-12 Tue 17:12
+\documentclass[presentation]{beamer}
+\usepackage[latin1]{inputenc}
+\usepackage[T1]{fontenc}
+\usepackage{fixltx2e}
+\usepackage{graphicx}
+\usepackage{longtable}
+\usepackage{float}
+\usepackage{wrapfig}
+\usepackage{soul}
+\usepackage{t1enc}
+\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}}
+
+\title{Using python modules}
+\author{FOSSEE}
+\date{}
+
+\usetheme{Warsaw}\usecolortheme{default}\useoutertheme{infolines}\setbeamercovered{transparent}
+\begin{document}
+
+\maketitle
+
+
+
+
+
+
+
+
+
+\begin{frame}
+\frametitle{Outline}
+\label{sec-1}
+
+\begin{itemize}
+\item Running python scripts from command line
+\item Importing python modules
+\item Importing scipy \& pylab modules
+\item About python standard library.
+\end{itemize}
+\end{frame}
+\begin{frame}[fragile]
+\frametitle{Running Python script from command line}
+\label{sec-2}
+
+\begin{itemize}
+\item Create a script, open text editor and type the following
+\begin{verbatim}
+     print "hello world!"
+     print
+\end{verbatim}
+
+\item Save the script as \texttt{hello.py}
+\end{itemize}
+\end{frame}
+\begin{frame}[fragile]
+\frametitle{Running Python script from command line (cont'd)}
+\label{sec-3}
+
+\begin{itemize}
+\item Run the script
+\begin{verbatim}
+     $ python hello.py
+\end{verbatim}
+
+\end{itemize}
+
+  \emph{Syntax :} \textbf{python filename}
+\end{frame}
+\begin{frame}
+\frametitle{Four plot problem}
+\label{sec-4}
+
+    \begin{center}
+      \includegraphics[scale=0.4]{four_plot}    
+    \end{center}
+\end{frame}
+\begin{frame}[fragile]
+\frametitle{Fix \texttt{linspace()} problem}
+\label{sec-5}
+
+\begin{verbatim}
+   from scipy import *
+\end{verbatim}
+\end{frame}
+\begin{frame}[fragile]
+\frametitle{Fix \texttt{plot()} problem}
+\label{sec-6}
+
+\begin{verbatim}
+   from pylab import *
+\end{verbatim}
+\end{frame}
+\begin{frame}[fragile]
+\frametitle{Better way of fixing}
+\label{sec-7}
+
+\begin{verbatim}
+   from scipy import linspace
+\end{verbatim}
+
+  instead of
+\begin{verbatim}
+   from scipy import *
+\end{verbatim}
+
+    \texttt{*} means import all functions from name-space \texttt{scipy}.
+\end{frame}
+\begin{frame}[fragile]
+\frametitle{Instead of \texttt{*}}
+\label{sec-8}
+
+\begin{verbatim}
+    from scipy import linspace, pi, sin
+    from pylab import plot, legend, annotate
+    from pylab import xlim, ylim, title, show
+\end{verbatim}
+
+  Is better than, \texttt{from scipy import *} \& \texttt{from pylab import *}.
+\end{frame}
+\begin{frame}[fragile]
+\frametitle{Another Fix}
+\label{sec-9}
+
+\begin{verbatim}
+import scipy
+import pylab
+x = scipy.linspace(-5*scipy.pi, 5*scipy.pi, 500)
+pylab.plot(x, x, 'b')
+pylab.plot(x, -x, 'b')
+pylab.plot(x, scipy.sin(x), 'g', linewidth=2)
+pylab.plot(x, x*scipy.sin(x), 'r', linewidth=3)
+pylab.legend(['x', '-x', 'sin(x)', 'xsin(x)'])
+pylab.annotate('origin', xy = (0, 0))
+pylab.xlim(-5*scipy.pi, 5*scipy.pi)
+pylab.ylim(-5*scipy.pi, 5*scipy.pi)
+\end{verbatim}
+\end{frame}
+\begin{frame}
+\frametitle{Exercise 1}
+\label{sec-10}
+
+  Write a python script to plot a sine wave from 
+    $-2\Pi$
+  to 
+    $2\Pi$
+  .
+\end{frame}
+\begin{frame}
+\frametitle{What is a module?}
+\label{sec-11}
+
+  Module is simply a file containing Python definitions and
+  statements. Definitions from a module can be imported into other
+  modules or into the main module.
+\end{frame}
+\begin{frame}
+\frametitle{Python standard library}
+\label{sec-12}
+
+  Python has a very rich standard library of modules.
+\begin{itemize}
+\item Few libraries
+
+\begin{itemize}
+\item Math: \texttt{math}, \texttt{random}
+\item Internet access: \texttt{urllib2}, \texttt{smtplib}
+\item System, Command line arguments: \texttt{sys}
+\item Operating system interface: \texttt{os}
+\item regular expressions: \texttt{re}
+\item compression: \texttt{gzip}, \texttt{zipfile}, \texttt{tarfile}
+\end{itemize}
+
+\item More information
+
+\begin{itemize}
+\item \href{http://docs.python.org/library}{http://docs.python.org/library}
+\end{itemize}
+
+\end{itemize}
+\end{frame}
+\begin{frame}
+\frametitle{Summary}
+\label{sec-13}
+
+\begin{itemize}
+\item Running scripts from command line
+\item Learned about modules
+
+\begin{itemize}
+\item importing modules
+\end{itemize}
+
+\item Python standard library
+\end{itemize}
+\end{frame}
+\begin{frame}
+\frametitle{Thank you!}
+\label{sec-14}
+
+  \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{frame}
+
+\end{document}