1 files changed, 35 insertions, 11 deletions
diff --git a/basic_python/control_flow.tex b/basic_python/control_flow.tex
index f53e028..a299563 100644
--- a/basic_python/control_flow.tex
+++ b/basic_python/control_flow.tex
@@ -72,6 +72,28 @@ else:
 \end{itemize}
 \end{frame}
 
+\begin{frame}[fragile]
+  \frametitle{Ternary operator}
+  \begin{itemize}
+  \item \texttt{score\_str} is either \texttt{'AA'} or a string of one
+    of the numbers in the range 0 to 100.
+  \item We wish to convert the string to a number using \texttt{int}
+  \item Convert it to 0, when it is \texttt{'AA'}
+  \item \texttt{if-else} construct or the ternary operator
+  \end{itemize}
+  \begin{lstlisting}
+   In []: if score_str != 'AA':
+   .....:     score = int(score_str)
+   .....: else:
+   .....:     score = 0
+  \end{lstlisting}
+  \begin{lstlisting}
+   In []: ss = score_str
+   In []: score = int(ss) if ss != 'AA' else 0
+  \end{lstlisting}
+\end{frame}
+
+
 \section{Control flow}
 \subsection{Basic Looping}
 
@@ -249,19 +271,21 @@ while b < 500:
 \end{frame}
 
 \begin{frame}[fragile]
-  \frametitle{\typ{continue} example}
-Try this:
-\begin{lstlisting}
-a = 0
-while a < 10:
-    if a % 2 == 0:
-        continue
-    print(a, end=' ')
-    a += 1
-\end{lstlisting}
-Carefully notice what it does
+  \frametitle{\texttt{continue}}
+  \begin{itemize}
+  \item Skips execution of rest of the loop on current iteration
+  \item Jumps to the end of this iteration
+  \item Squares of all odd numbers below 10, not multiples of 3
+  \end{itemize}
+  \begin{lstlisting}
+  In []: for n in range(1, 10, 2):
+  .....:     if n%3 == 0:
+  .....:         continue
+  .....:     print(n*n)
+  \end{lstlisting}
 \end{frame}
 
+
 \begin{frame}[fragile]
   \frametitle{\typ{pass} example}
 Try this: