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Issues #12067: Merge hash recommendation from 3.5

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Martin Panter 2017-01-29 10:07:26 +00:00
parent e53bd8e2d0 8dbb0ca573
commit 2be9889405
1 changed files with 4 additions and 0 deletions
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Doc/reference/expressions.rst
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@ -1415,6 +1415,10 @@ some consistency rules, if possible:
sequences, but not to sets or mappings). See also the sequences, but not to sets or mappings). See also the
:func:`~functools.total_ordering` decorator. :func:`~functools.total_ordering` decorator.
* The :func:`hash` result should be consistent with equality.
Objects that are equal should either have the same hash value,
or be marked as unhashable.
Python does not enforce these consistency rules. In fact, the not-a-number Python does not enforce these consistency rules. In fact, the not-a-number
values are an example for not following these rules. values are an example for not following these rules.