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| author | Raymond Hettinger <python@rcn.com> | 2016-04-26 08:11:28 (GMT) |
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| committer | Raymond Hettinger <python@rcn.com> | 2016-04-26 08:11:28 (GMT) |
| commit | c5c43b8374ced0e889cf90b6e1ff0cc4341dbb3a (patch) | |
| tree | 3e1f6a8369d781e0e9e04005f23746ee5c3f5333 /Doc/howto | |
| parent | ab425aa9d3353a15e2a673eb1af121dcde720a14 (diff) | |
| parent | b9531bcdcce35c443f1b7c6f1c79ed8ae575f36b (diff) | |
| download | cpython-c5c43b8374ced0e889cf90b6e1ff0cc4341dbb3a.zip cpython-c5c43b8374ced0e889cf90b6e1ff0cc4341dbb3a.tar.gz cpython-c5c43b8374ced0e889cf90b6e1ff0cc4341dbb3a.tar.bz2 | |
merge
Diffstat (limited to 'Doc/howto')
| -rw-r--r-- | Doc/howto/sorting.rst | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/Doc/howto/sorting.rst b/Doc/howto/sorting.rst index 10cb94c..0334b26 100644 --- a/Doc/howto/sorting.rst +++ b/Doc/howto/sorting.rst @@ -262,7 +262,11 @@ Odd and Ends twice: >>> data = [('red', 1), ('blue', 1), ('red', 2), ('blue', 2)] - >>> assert sorted(data, reverse=True) == list(reversed(sorted(reversed(data)))) + >>> standard_way = sorted(data, key=itemgetter(0), reverse=True) + >>> double_reversed = list(reversed(sorted(reversed(data), key=itemgetter(0)))) + >>> assert standard_way == double_reversed + >>> standard_way + [('red', 1), ('red', 2), ('blue', 1), ('blue', 2)] * The sort routines are guaranteed to use :meth:`__lt__` when making comparisons between two objects. So, it is easy to add a standard sort order to a class by |