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% Created 2010-10-27 Wed 17:51
\documentclass[presentation]{beamer}
\usepackage[latin1]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{fixltx2e}
\usepackage{graphicx}
\usepackage{longtable}
\usepackage{float}
\usepackage{wrapfig}
\usepackage{soul}
\usepackage{t1enc}
\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{Loops}
\author{FOSSEE}
\date{}
\usetheme{Warsaw}\usecolortheme{default}\useoutertheme{infolines}\setbeamercovered{transparent}
\begin{document}
\maketitle
\begin{frame}
\frametitle{Outline}
\label{sec-1}
\begin{itemize}
\item Loop while a condition is true.
\item Iterate over a sequence
\item Breaking out of loops.
\item Skipping iterations.
\end{itemize}
\end{frame}
\begin{frame}
\frametitle{Question 1}
\label{sec-2}
Write a \texttt{while} loop to print the squares of all the even
numbers below 10.
\end{frame}
\begin{frame}[fragile]
\frametitle{Solution 1}
\label{sec-3}
\begin{verbatim}
In []: i = 2
In []: while i<10:
....: print i*i
....: i += 2
\end{verbatim}
\end{frame}
\begin{frame}
\frametitle{Question 2}
\label{sec-4}
Write a \texttt{for} loop to print the squares of all the even numbers
below 10.
\end{frame}
\begin{frame}[fragile]
\frametitle{Solution 2}
\label{sec-5}
\begin{verbatim}
In []: for n in range(2, 10, 2):
....: print n*n
\end{verbatim}
\end{frame}
\begin{frame}
\frametitle{Question 3}
\label{sec-6}
Using the \texttt{continue} keyword modify the \texttt{for} loop to print the
squares of even numbers below 10, to print the squares of only
multiples of 4. (Do not modify the range function call.)
\end{frame}
\begin{frame}[fragile]
\frametitle{Solution 3}
\label{sec-7}
\begin{verbatim}
for n in range(2, 10, 2):
if n%4:
continue
print n*n
\end{verbatim}
\end{frame}
\begin{frame}
\frametitle{Summary}
\label{sec-8}
You should now be able to --
\begin{itemize}
\item use the \texttt{for} loop
\item use the \texttt{while} loop
\item Use \texttt{break}, \texttt{continue} and \texttt{pass} statements
\end{itemize}
\end{frame}
\begin{frame}
\frametitle{Thank you!}
\label{sec-9}
\begin{block}{}
\begin{center}
This spoken tutorial has been produced by the
\textcolor{blue}{FOSSEE} team, which is funded by the
\end{center}
\begin{center}
\textcolor{blue}{National Mission on Education through \\
Information \& Communication Technology \\
MHRD, Govt. of India}.
\end{center}
\end{block}
\end{frame}
\end{document}
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