From: Raymond Hettinger <python@rcn.com>
Date: Mon, 6 May 2013 02:53:41 +0000 (-0700)
Subject: Issue 17862:  Improve the signature of itertools grouper() recipe.
X-Git-Tag: v3.3.2~28
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=44571daf0e3a1df376dc97551643281bdf2dbcb8;p=python

Issue 17862:  Improve the signature of itertools grouper() recipe.

Putting *n* after the *iterable* matches the signature of other itertools
and recipes.  Also, it reads better.

Suggested by Ezio Melotti.
---

diff --git a/Doc/library/itertools.rst b/Doc/library/itertools.rst
index 1eb554a40a..7099fa031b 100644
--- a/Doc/library/itertools.rst
+++ b/Doc/library/itertools.rst
@@ -705,9 +705,9 @@ which incur interpreter overhead.
        next(b, None)
        return zip(a, b)
 
-   def grouper(n, iterable, fillvalue=None):
+   def grouper(iterable, n, fillvalue=None):
        "Collect data into fixed-length chunks or blocks"
-       # grouper(3, 'ABCDEFG', 'x') --> ABC DEF Gxx"
+       # grouper('ABCDEFG', 3, 'x') --> ABC DEF Gxx"
        args = [iter(iterable)] * n
        return zip_longest(*args, fillvalue=fillvalue)