% Created 2010-11-09 Tue 16:07

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\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{Manipulating Lists}

\author{FOSSEE}

\date{}

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

\begin{document}

\maketitle

\begin{frame}

\frametitle{Outline}

\label{sec-1}

  In this session we shall be looking at 

\begin{itemize}

\item Concatenating lists

\item Obtaining parts of lists

\item Sorting lists

\item Reversing lists

\end{itemize}

\end{frame}

\begin{frame}

\frametitle{Question 1}

\label{sec-2}

  Obtain the primes less than 10, from the list \texttt{primes}. 

\end{frame}

\begin{frame}[fragile]

\frametitle{Solution 1}

\label{sec-3}

\lstset{language=Python}

\begin{lstlisting}

primes[0:4]

\end{lstlisting}

\end{frame}

\begin{frame}[fragile]

\frametitle{Slicing}

\label{sec-4}

\lstset{language=Python}

\begin{lstlisting}

p[start:stop]

\end{lstlisting}

\begin{itemize}

\item Returns all elements of \texttt{p} between \texttt{start} and \texttt{stop}

\item The element with index equal to \texttt{stop} is \textbf{not} included.

\end{itemize}

\end{frame}

\begin{frame}

\frametitle{Question 2}

\label{sec-5}

  Obtain all the multiples of three from the list \texttt{num}.

\end{frame}

\begin{frame}[fragile]

\frametitle{Solution 2}

\label{sec-6}

\lstset{language=Python}

\begin{lstlisting}

num[::3]

\end{lstlisting}

\end{frame}

\begin{frame}[fragile]

\frametitle{Question 3}

\label{sec-7}

  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}[fragile]

\frametitle{Solution 3}

\label{sec-8}

\lstset{language=Python}

\begin{lstlisting}

sorted(marks)[::-1]

\end{lstlisting}

OR

\lstset{language=Python}

\begin{lstlisting}

sorted(marks, reverse=True)

\end{lstlisting}

\end{frame}

\begin{frame}

\frametitle{Summary}

\label{sec-9}

  In this tutorial session we learnt

\begin{itemize}

\item Obtaining parts of lists using slicing and striding

\item List concatenation

\item Sorting lists

\item Reversing lists

\end{itemize}

\end{frame}

\begin{frame}

\frametitle{Thank you!}

\label{sec-10}

  \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}