% Created 2010-11-10 Wed 10:46

\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{}

\author{FOSSEE}

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

\frametitle{Outline}

\label{sec-1}

\begin{itemize}

\item Defining strings\\

\label{sec-1_1}%

\item Concatenation\\

\label{sec-1_2}%

\item Accessing individual elements\\

\label{sec-1_3}%

\item Immutability of strings\\

\label{sec-1_4}%

\end{itemize} % ends low level

\begin{frame}

\frametitle{Question 1}

\label{sec-2}

  Obtain the string \texttt{\%\% -------------------- \%\%} (20 hyphens) without

  typing out all the twenty hyphens.

\end{frame}

\frametitle{Solution 1}

\label{sec-3}

\lstset{language=Python}

\begin{lstlisting}

s = "%% " + "-"*20 + " %%"

\end{lstlisting}

\begin{frame}[fragile]

\frametitle{Question 2}

\label{sec-4}

  Given a string, \texttt{s} which is \texttt{Hello World} , what is the output of::

\lstset{language=Python}

\begin{lstlisting}

s[-5] 

s[-10]

s[-15]

\end{lstlisting}

\end{frame}

\frametitle{Solution 2}

\label{sec-5}

\lstset{language=Python}

\begin{lstlisting}

'W'

'e'

IndexError

\end{lstlisting}

\frametitle{Summary}

\label{sec-6}

  In this tutorial we have learnt

\begin{itemize}

\item How to define strings

\item Different ways of defining a string

\item String concatenation and repetition

\item Accessing individual elements of the string

\item Immutability of strings

\end{itemize}

\end{frame}

\begin{frame}

\frametitle{Thank you!}

\label{sec-7}