--- a/advanced-features-functions/slides.tex	Wed Oct 27 19:25:45 2010 +0530
+++ b/advanced-features-functions/slides.tex	Thu Oct 28 12:16:47 2010 +0530
@@ -1,4 +1,4 @@
-% Created 2010-10-11 Mon 00:34
+% Created 2010-10-28 Thu 11:37
 \documentclass[presentation]{beamer}
 \usepackage[latin1]{inputenc}
 \usepackage[T1]{fontenc}
@@ -8,6 +8,7 @@
 \usepackage{float}
 \usepackage{wrapfig}
 \usepackage{soul}
+\usepackage{t1enc}
 \usepackage{textcomp}
 \usepackage{marvosym}
 \usepackage{wasysym}
@@ -62,11 +63,10 @@
 \frametitle{Solution 1}
 \label{sec-3}
 
-\lstset{language=Python}
-\begin{lstlisting}
+\begin{verbatim}
 def welcome(name="World", greet):
     print greet, name
-\end{lstlisting}
+\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}
@@ -81,10 +81,9 @@
 \frametitle{Solution 2}
 \label{sec-5}
 
-\lstset{language=Python}
-\begin{lstlisting}
+\begin{verbatim}
 linspace?
-\end{lstlisting}
+\end{verbatim}
 \end{frame}
 \begin{frame}
 \frametitle{Question 3}
@@ -98,13 +97,12 @@
 \frametitle{Solution 3}
 \label{sec-7}
 
-\lstset{language=Python}
-\begin{lstlisting}
+\begin{verbatim}
 def welcome(greet="Hello", name="World"):
     print greet, name
 
 welcome()
-\end{lstlisting}
+\end{verbatim}
 \end{frame}
 \begin{frame}
 \frametitle{Summary}