\documentclass[12pt]{article}

%\title{Plotting Data}

%\author{FOSSEE}

\begin{document}

\date{}

\vspace{-1in}

\begin{center}

\LARGE{Plotting Data}\\

\large{FOSSEE}

\end{center}

\section{Scripts}

IPython History

\begin{verbatim}

In [1]: %hist

In [2]: %hist -n

\end{verbatim}

Running a Script

\begin{verbatim}

In [3]:  %run script_name.py

\end{verbatim}

\section{Plotting from Data files}

\begin{verbatim}

In [1]: L = [] #Empty List

In [2]: T = []

In [3]: for line in open('pendulum.txt'): # Opening & Reading files

  ....:     points = line.split() # Splitting a string

  ....:     L.append(float(points[0])) # Appending to a list

  ....:     T.append(float(points[1]))

In [4]: TSq = []

In [5]: for t in T:  #Iterating through lists

 ....:     TSq.append(t*t)

In [6]: plot(L, TSq, '.') # Plotting points

\end{verbatim}

\end{document}