% Created 2011-06-29 Wed 13:50 \documentclass[presentation]{beamer} \usepackage[latin1]{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 Manipulating Lists} \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 Concatenate two lists. \item Learn the details of slicing and striding of lists. \item Sort and reverse lists. \end{itemize} \end{frame} \begin{frame} \frametitle{Pre-requisite} \label{sec-3} Spoken tutorial on - \begin{itemize} \item Getting started with Lists. \end{itemize} \end{frame} \begin{frame} \frametitle{Exercise 1} \label{sec-4} Obtain the primes less than 10, from the list \verb~primes~. \end{frame} \begin{frame}[fragile] \frametitle{Slicing} \label{sec-5} \lstset{language=Python} \begin{lstlisting} p[start:stop] \end{lstlisting} \begin{itemize} \item Returns all elements of \verb~p~ between \verb~start~ and \verb~stop~ \item The element with index equal to \verb~stop~ is \textbf{not} included. \end{itemize} \end{frame} \begin{frame} \frametitle{Exercise 2} \label{sec-6} Obtain all the multiples of three from the list \verb~num~. \end{frame} \begin{frame}[fragile] \frametitle{Solution 2} \label{sec-7} \lstset{language=Python} \begin{lstlisting} num[::3] \end{lstlisting} \end{frame} \begin{frame}[fragile] \frametitle{Exercise 3} \label{sec-8} Given a list of marks of students in an examination, obtain a list with marks in descending order. \lstset{language=Python} \begin{lstlisting} marks = [99, 67, 47, 100, 50, 75, 62] \end{lstlisting} \end{frame} \begin{frame} \frametitle{Summary} \label{sec-9} In this tutorial, we have learnt to, \begin{itemize} \item Obtain parts of lists using slicing and striding. \item Concatenate lists using the ``plus'' operator. \item Sort lists using the ``sort'' method. \item Use the method ``reverse'' to reverse the lists. \end{itemize} \end{frame} \begin{frame} \frametitle{Evaluation} \label{sec-10} \begin{enumerate} \item Given the list primes,\\ primes = [2, 3, 5, 7, 11, 13, 17, 19, 23, 29],\\ How do you obtain the last 4 primes? \vspace{11pt} \item Given a list, p, of unknown length, obtain the first 3 (or all, if there are fewer) characters of it. \vspace{11pt} \item ``reversed'' function reverses a list in place. True or False? \end{enumerate} \end{frame} \begin{frame} \frametitle{Solutions} \label{sec-11} \begin{enumerate} \item primes[-4:] \vspace{8pt} \item p[:3] \vspace{8pt} \item False \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}