% Created 2010-10-10 Sun 17:51

\documentclass[presentation]{beamer}

\usepackage{fixltx2e}

\usepackage{graphicx}

\usepackage{longtable}

\usepackage{float}

\usepackage{wrapfig}

\usepackage{soul}

\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{Getting started with files}

\author{FOSSEE}

\usetheme{Warsaw}\usecolortheme{default}\useoutertheme{infolines}\setbeamercovered{transparent}

\maketitle

\frametitle{Outline}

\label{sec-1}

\begin{itemize}

\item Opening and reading contents of a file

\item Closing open files

\item Reading all the contents of the file at once

\item Reading files line by line

\end{itemize}

\begin{frame}

\frametitle{Question 1}

\label{sec-2}

  Split the variable into a list, \texttt{pend\_list}, of the lines in the

  file. Hint, use the tab command to see what methods the string

  variable has.

\end{frame}

\frametitle{Solution 1}

\label{sec-3}

\lstset{language=Python}

\begin{lstlisting}

In []: pend_list = pend.splitlines()

In []: pend_list

\end{lstlisting}

\end{frame}

\begin{frame}

\frametitle{Question 2}

\label{sec-4}

  Re-open the file \texttt{pendulum.txt} with \texttt{f} as the file object.

\end{frame}

\frametitle{Solution 2}

\label{sec-5}

\lstset{language=Python}

\begin{lstlisting}

In []:   f = open('/home/fossee/pendulum.txt')

\end{lstlisting}

\frametitle{Summary}

\label{sec-6}

\begin{itemize}

\item Opening a file using \texttt{open} function

\item Reading all the contents of the file at once using \texttt{read()} method

\item Closing open files using the \texttt{close} method

\item Reading files line by line by iterating using a \texttt{for} loop

\end{itemize}

\end{frame}

\begin{frame}

\frametitle{Thank you!}

\label{sec-7}