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+% Created 2010-10-28 Thu 11:37
+\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{Advanced features of functions}
+\author{FOSSEE}
+\date{}
+
+\usetheme{Warsaw}\usecolortheme{default}\useoutertheme{infolines}\setbeamercovered{transparent}
+\begin{document}
+
+\maketitle
+
+
+
+
+
+
+
+
+
+\begin{frame}
+\frametitle{Outline}
+\label{sec-1}
+
+\begin{itemize}
+\item Assigning default values to arguments
+\item Calling functions using Keyword arguments
+\item functions in standard library
+\end{itemize}
+\end{frame}
+\begin{frame}
+\frametitle{Question 1}
+\label{sec-2}
+
+  Redefine the function \texttt{welcome}, by interchanging it's
+  arguments. Place the \texttt{name} argument with it's default value of
+  ``World'' before the \texttt{greet} argument.
+\end{frame}
+\begin{frame}[fragile]
+\frametitle{Solution 1}
+\label{sec-3}
+
+\begin{verbatim}
+def welcome(name="World", greet):
+    print greet, name
+\end{verbatim}
+  We get an error that reads \texttt{SyntaxError: non-default argument   follows default argument}. When defining a function all the
+  argument with default values should come at the end.
+\end{frame}
+\begin{frame}
+\frametitle{Question 2}
+\label{sec-4}
+
+  See the definition of linspace using \texttt{?} and observe how all the
+  arguments with default values are towards the end.
+\end{frame}
+\begin{frame}[fragile]
+\frametitle{Solution 2}
+\label{sec-5}
+
+\begin{verbatim}
+linspace?
+\end{verbatim}
+\end{frame}
+\begin{frame}
+\frametitle{Question 3}
+\label{sec-6}
+
+  Redefine the function \texttt{welcome} with a default value of
+  ``Hello'' to the \texttt{greet} argument. Then, call the function without any
+  arguments. 
+\end{frame}
+\begin{frame}[fragile]
+\frametitle{Solution 3}
+\label{sec-7}
+
+\begin{verbatim}
+def welcome(greet="Hello", name="World"):
+    print greet, name
+
+welcome()
+\end{verbatim}
+\end{frame}
+\begin{frame}
+\frametitle{Summary}
+\label{sec-8}
+
+  You should now be able to --
+\begin{itemize}
+\item define functions with default arguments
+\item call functions using keyword arguments
+\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}




