https://hg.python.org/cpython/rev/9702c5f08df1 changeset: 106331:9702c5f08df1 branch: 3.6 parent: 106327:b33c3f26eefa parent: 106329:8c9a86aa222e user: Martin Panter <vadmium+py@gmail.com> date: Sun Jan 29 10:07:26 2017 +0000 summary: Issues #12067: Merge hash recommendation from 3.5 files: Doc/reference/expressions.rst | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/Doc/reference/expressions.rst b/Doc/reference/expressions.rst --- a/Doc/reference/expressions.rst +++ b/Doc/reference/expressions.rst @@ -1415,6 +1415,10 @@ sequences, but not to sets or mappings). See also the :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 values are an example for not following these rules. -- Repository URL: https://hg.python.org/cpython