From bdb7fe4c843c0290acfd8e4b194a90870ad9f733 Mon Sep 17 00:00:00 2001
From: Raymond Hettinger <python@rcn.com>
Date: Wed, 1 Feb 2012 08:52:44 -0800
Subject: [PATCH] Add a usage note

---
 Doc/library/itertools.rst | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Doc/library/itertools.rst b/Doc/library/itertools.rst
index 36a391b4095..21465e5721b 100644
--- a/Doc/library/itertools.rst
+++ b/Doc/library/itertools.rst
@@ -590,6 +590,11 @@ loops that truncate the stream.
               for i in xrange(times):
                   yield object
 
+   A common use for *repeat* is to supply a stream of constant values to *imap*
+   or *zip*::
+ 
+      >>> list(imap(pow, range(10), repeat(2)))
+      [0, 1, 4, 9, 16, 25, 36, 49, 64, 81]
 
 .. function:: starmap(function, iterable)