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     1 % Created 2010-10-11 Mon 11:27

     2 %Tutorial slides on Python.

     2 \documentclass[presentation]{beamer}

     3 %

     3 \usepackage[latin1]{inputenc}

     4 % Author: FOSSEE 

     4 \usepackage[T1]{fontenc}

     5 % Copyright (c) 2009, FOSSEE, IIT Bombay

     5 \usepackage{fixltx2e}

     6 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

     6 \usepackage{graphicx}

     7 \usepackage{longtable}

     8 \usepackage{float}

     9 \usepackage{wrapfig}

    10 \usepackage{soul}

    11 \usepackage{textcomp}

    12 \usepackage{marvosym}

    13 \usepackage{wasysym}

    14 \usepackage{latexsym}

    15 \usepackage{amssymb}

    16 \usepackage{hyperref}

    17 \tolerance=1000

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

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

    20 \usepackage{listings}

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

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

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

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

     8 \documentclass[14pt,compress]{beamer}

    26 \title{Manipulating strings}

     9 %\documentclass[draft]{beamer}

    27 \author{FOSSEE}

    10 %\documentclass[compress,handout]{beamer}

    11 %\usepackage{pgfpages} 

    12 %\pgfpagesuselayout{2 on 1}[a4paper,border shrink=5mm]

    13 

    14 % Modified from: generic-ornate-15min-45min.de.tex

    15 \mode<presentation>

    16 {

    17   \usetheme{Warsaw}

    18   \useoutertheme{infolines}

    19   \setbeamercovered{transparent}

    20 }

    21 

    22 \usepackage[english]{babel}

    23 \usepackage[latin1]{inputenc}

    24 %\usepackage{times}

    25 \usepackage[T1]{fontenc}

    26 

    27 \usepackage{ae,aecompl}

    28 \usepackage{mathpazo,courier,euler}

    29 \usepackage[scaled=.95]{helvet}

    30 

    31 \definecolor{darkgreen}{rgb}{0,0.5,0}

    32 

    33 \usepackage{listings}

    34 \lstset{language=Python,

    35     basicstyle=\ttfamily\bfseries,

    36     commentstyle=\color{red}\itshape,

    37   stringstyle=\color{darkgreen},

    38   showstringspaces=false,

    39   keywordstyle=\color{blue}\bfseries}

    40 

    41 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

    42 % Macros

    43 \setbeamercolor{emphbar}{bg=blue!20, fg=black}

    44 \newcommand{\emphbar}[1]

    45 {\begin{beamercolorbox}[rounded=true]{emphbar} 

    46       {#1}

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    50 \setcounter{time}{0}

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    52 

    53 \newcommand{\typ}[1]{\lstinline{#1}}

    54 

    55 \newcommand{\kwrd}[1]{ \texttt{\textbf{\color{blue}{#1}}}  }

    56 

    57 % Title page

    58 \title{Your Title Here}

    59 

    60 \author[FOSSEE] {FOSSEE}

    61 

    62 \institute[IIT Bombay] {Department of Aerospace Engineering\\IIT Bombay}

    65 % DOCUMENT STARTS

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

    68 \begin{frame}

    33 \maketitle

    69   \maketitle

    70 \end{frame}

    84 \begin{frame}[fragile]

    37 

    85   \frametitle{Summary}

    38 

    86   \begin{itemize}

    39 

    87     \item 

    40 

    88   \end{itemize}

    41 

    89 \end{frame}

    92   \frametitle{Thank you!}  

    44 \frametitle{Outline}

    45 \label{sec-1}

    46 

    47 \begin{itemize}

    48 \item Slicing strings to get sub-strings

    49 \item Reversing strings

    50 \item Replacing characters in strings.

    51 \item Converting strings to upper or lower case

    52 \item Joining a list of strings

    53 \end{itemize}

    54 \end{frame}

    55 \begin{frame}

    56 \frametitle{Question 1}

    57 \label{sec-2}

    58 

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

    60   the string \texttt{s}.

    61 \end{frame}

    62 \begin{frame}[fragile]

    63 \frametitle{Solution 1}

    64 \label{sec-3}

    65 

    66 \lstset{language=Python}

    67 \begin{lstlisting}

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

    69 \end{lstlisting}

    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 \lstset{language=Python}

    84 \begin{lstlisting}

    85 In []:  s in week

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

    87 \end{lstlisting}

    88 \end{frame}

    89 \begin{frame}

    90 \frametitle{Question 3}

    91 \label{sec-6}

    92 

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

    94 

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

    96 \end{frame}

    97 \begin{frame}[fragile]

    98 \frametitle{Solution 3}

    99 \label{sec-7}

   100 

   101 \lstset{language=Python}

   102 \begin{lstlisting}

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

   104 print email

   105 \end{lstlisting}

   106 \end{frame}

   107 \begin{frame}

   108 \frametitle{Question 4}

   109 \label{sec-8}

   110 

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

   112   semicolon instead of a comma.

   113 \end{frame}

   114 \begin{frame}[fragile]

   115 \frametitle{Solution 4}

   116 \label{sec-9}

   117 

   118 \lstset{language=Python}

   119 \begin{lstlisting}

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

   121 \end{lstlisting}

   122 \end{frame}

   123 \begin{frame}

   124 \frametitle{Summary}

   125 \label{sec-10}

   126 

   127   You should now be able to --

   128 \begin{itemize}

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

   130 \item Reverse strings

   131 \item Replace characters in strings.

   132 \item Convert strings to upper or lower case

   133 \item Join a list of strings

   134 \end{itemize}

   135 \end{frame}

   136 \begin{frame}

   137 \frametitle{Thank you!}

   138 \label{sec-11}

   139