1 % Created 2010-10-28 Thu 11:35

     2 \documentclass[presentation]{beamer}

     3 \usepackage[latin1]{inputenc}

     4 \usepackage[T1]{fontenc}

     5 \usepackage{fixltx2e}

     6 \usepackage{graphicx}

     7 \usepackage{longtable}

     8 \usepackage{float}

     9 \usepackage{wrapfig}

    10 \usepackage{soul}

    11 \usepackage{t1enc}

    12 \usepackage{textcomp}

    13 \usepackage{marvosym}

    14 \usepackage{wasysym}

    15 \usepackage{latexsym}

    16 \usepackage{amssymb}

    17 \usepackage{hyperref}

    18 \tolerance=1000

    19 \usepackage[english]{babel} \usepackage{ae,aecompl}

    20 \usepackage{mathpazo,courier,euler} \usepackage[scaled=.95]{helvet}

    21 \usepackage{listings}

    22 \lstset{language=Python, basicstyle=\ttfamily\bfseries,

    23 commentstyle=\color{red}\itshape, stringstyle=\color{darkgreen},

    24 showstringspaces=false, keywordstyle=\color{blue}\bfseries}

    25 \providecommand{\alert}[1]{\textbf{#1}}

    26 

    27 \title{Manipulating strings}

    28 \author{FOSSEE}

    29 \date{}

    30 

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

    32 \begin{document}

    33 

    34 \maketitle

    35 

    36 

    37 

    38 

    39 

    40 

    41 

    42 

    43 

    44 \begin{frame}

    45 \frametitle{Outline}

    46 \label{sec-1}

    47 

    48 \begin{itemize}

    49 \item Slicing strings to get sub-strings

    50 \item Reversing strings

    51 \item Replacing characters in strings.

    52 \item Converting strings to upper or lower case

    53 \item Joining a list of strings

    54 \end{itemize}

    55 \end{frame}

    56 \begin{frame}

    57 \frametitle{Question 1}

    58 \label{sec-2}

    59 

    60   Obtain the sub-string excluding the first and last characters from

    61   the string \texttt{s}.

    62 \end{frame}

    63 \begin{frame}[fragile]

    64 \frametitle{Solution 1}

    65 \label{sec-3}

    66 

    67 \begin{verbatim}

    68 In []:  s[1:-1]

    69 \end{verbatim}

    70 \end{frame}

    71 \begin{frame}

    72 \frametitle{Question 2}

    73 \label{sec-4}

    74 

    75   Given a list week, week = \texttt{week = ["sun", "mon", "tue", "wed",   "thu", "fri", "sat"]}. Check if \texttt{s} is a valid name of a day of the

    76   week. Change the solution to this problem, to include forms like,

    77   SAT, SATURDAY, Saturday and Sat.

    78 \end{frame}

    79 \begin{frame}[fragile]

    80 \frametitle{Solution 2}

    81 \label{sec-5}

    82 

    83 \begin{verbatim}

    84 In []:  s in week

    85 In []:  s.lower()[:3] in week

    86 \end{verbatim}

    87 \end{frame}

    88 \begin{frame}

    89 \frametitle{Question 3}

    90 \label{sec-6}

    91 

    92   Given \texttt{email} -- \texttt{info@fossee[dot]in}

    93 

    94   Replace the \texttt{[dot]} with \texttt{.} in \texttt{email}

    95 \end{frame}

    96 \begin{frame}[fragile]

    97 \frametitle{Solution 3}

    98 \label{sec-7}

    99 

   100 \begin{verbatim}

   101 email.replace('[dot], '.')

   102 print email

   103 \end{verbatim}

   104 \end{frame}

   105 \begin{frame}

   106 \frametitle{Question 4}

   107 \label{sec-8}

   108 

   109   From the \texttt{email\_str} that we generated, change the separator to be a

   110   semicolon instead of a comma.

   111 \end{frame}

   112 \begin{frame}[fragile]

   113 \frametitle{Solution 4}

   114 \label{sec-9}

   115 

   116 \begin{verbatim}

   117 email_str = email_str.replace(",", ";")

   118 \end{verbatim}

   119 \end{frame}

   120 \begin{frame}

   121 \frametitle{Summary}

   122 \label{sec-10}

   123 

   124   You should now be able to --

   125 \begin{itemize}

   126 \item Slice strings and get sub-strings out of them

   127 \item Reverse strings

   128 \item Replace characters in strings.

   129 \item Convert strings to upper or lower case

   130 \item Join a list of strings

   131 \end{itemize}

   132 \end{frame}

   133 \begin{frame}

   134 \frametitle{Thank you!}

   135 \label{sec-11}

   136 

   137   \begin{block}{}

   138   \begin{center}

   139   This spoken tutorial has been produced by the

   140   \textcolor{blue}{FOSSEE} team, which is funded by the 

   141   \end{center}

   142   \begin{center}

   143     \textcolor{blue}{National Mission on Education through \\

   144       Information \& Communication Technology \\ 

   145       MHRD, Govt. of India}.

   146   \end{center}  

   147   \end{block}

   148 \end{frame}

   149 

   150 \end{document}