diff -r 88a01948450d -r d33698326409 using python modules/slides.tex --- a/using python modules/slides.tex Wed Nov 17 23:24:57 2010 +0530 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,227 +0,0 @@ -% 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}