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-#+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
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-
-* 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
-
-