In the example iterating over sys.argv and opening each argument,
change it to iterate over sys.argv[1:].  Suggestion by Gerry Wiener.
diff --git a/Doc/tut/tut.tex b/Doc/tut/tut.tex
index 3b63918..14cb3ca 100644
--- a/Doc/tut/tut.tex
+++ b/Doc/tut/tut.tex
@@ -2708,7 +2708,7 @@
 raise an exception.  For example:
 
 \begin{verbatim}
-for arg in sys.argv:
+for arg in sys.argv[1:]:
     try:
         f = open(arg, 'r')
     except IOError: