A few more fixes to the tutorial
diff --git a/Doc/tutorial/controlflow.rst b/Doc/tutorial/controlflow.rst
index 0d9a21d..ebd531e 100644
--- a/Doc/tutorial/controlflow.rst
+++ b/Doc/tutorial/controlflow.rst
@@ -436,8 +436,7 @@
        print("-- I'm sorry, we're all out of", kind)
        for arg in arguments: print arg
        print('-'*40)
-       keys = keywords.keys()
-       keys.sort()
+       keys = sorted(keywords.keys())
        for kw in keys: print(kw, ':', keywords[kw])
 
 It could be called like this::