From: Raymond Hettinger <python@rcn.com>
Date: Wed, 17 Jun 2009 01:40:52 +0000 (+0000)
Subject: Add usage note.
X-Git-Tag: v3.1~37
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5bc472a9a429ff051df9415e7a61046bcd78eb51;p=thirdparty%2FPython%2Fcpython.git

Add usage note.
---

diff --git a/Doc/library/itertools.rst b/Doc/library/itertools.rst
index 7baa5e10de65..ac3b761198c4 100644
--- a/Doc/library/itertools.rst
+++ b/Doc/library/itertools.rst
@@ -235,6 +235,10 @@ loops that truncate the stream.
               yield n
               n += step
 
+   When counting with floating point numbers, better accuracy can sometimes be
+   achieved by substituting multiplicative code such as: ``(start + step * i
+   for i in count())``.
+
    .. versionchanged:: 3.1
       added *step* argument and allowed non-integer arguments.