% Created 2011-06-27 Mon 11:03 \documentclass[presentation]{beamer} \usepackage[utf8]{inputenc} \usepackage[T1]{fontenc} \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} \date{} \usetheme{Warsaw}\usecolortheme{default}\useoutertheme{infolines}\setbeamercovered{transparent} \begin{document} \begin{frame} \begin{center} \vspace{12pt} \textcolor{blue}{\huge Loops} \end{center} \vspace{18pt} \begin{center} \vspace{10pt} \includegraphics[scale=0.95]{../images/fossee-logo.png}\\ \vspace{5pt} \scriptsize Developed by FOSSEE Team, IIT-Bombay. \\ \scriptsize Funded by National Mission on Education through ICT\\ \scriptsize MHRD,Govt. of India\\ \includegraphics[scale=0.30]{../images/iitb-logo.png}\\ \end{center} \end{frame} \begin{frame} \frametitle{Objectives} \label{sec-2} At the end of this tutorial, you will be able to, \begin{itemize} \item use the ``for'' loop. \item use the ``while'' loop. \item Use ``break'', ``continue'' and ``pass'' statements to play around with loops. \end{itemize} \end{frame} \begin{frame} \frametitle{Pre-requisite} \label{sec-3} Spoken tutorial on - \begin{itemize} \item Getting started with \verb~for~. \item Conditionals. \end{itemize} \end{frame} \begin{frame} \frametitle{Exercise 1} \label{sec-4} Write a \verb~while~ loop to print the squares of all the even numbers below 10. \end{frame} \begin{frame} \frametitle{Exercise 2} \label{sec-5} Write a \verb~for~ loop to print the squares of all the even numbers below 10. \end{frame} \begin{frame} \frametitle{Exercise 3} \label{sec-6} Using the \verb~continue~ keyword, modify the \verb~for~ loop, with the range ``range(2,10,2)'', to print the squares of even numbers below 10, which are multiples of 4.\\ (Do not modify the range function call.) \end{frame} \begin{frame} \frametitle{Summary} \label{sec-7} In this tutorial, we have learnt to, \begin{itemize} \item Iterate over a sequence using ``for'' and ``while'' loops. \item Break out of loops using ``break'' statement. \item Skip iterations using ``continue'' statement. \item Use the ``pass'' statement in a loop. \end{itemize} \end{frame} \begin{frame} \frametitle{Evaluation} \label{sec-8} \begin{enumerate} \item Given ``range(1,4)'' \\ Write a code to print only the number 1. \vspace{12pt} \item Which statement do you use to skip iterations. \begin{itemize} \item break \item pass \item continue \end{itemize} \end{enumerate} \end{frame} \begin{frame}[fragile] \frametitle{Solutions} \label{sec-9} \begin{enumerate} \item \lstset{language=Python} \begin{lstlisting} for i in range(1,4): print i break \end{lstlisting} \vspace{8pt} \item \verb~continue~ \end{enumerate} \end{frame} \begin{frame} \begin{block}{} \begin{center} \textcolor{blue}{\Large THANK YOU!} \end{center} \end{block} \begin{block}{} \begin{center} For more Information, visit our website\\ \url{http://fossee.in/} \end{center} \end{block} \end{frame} \end{document}