cpython: 9702c5f08df1 (original) (raw)

Mercurial > cpython

changeset 106331:9702c5f08df1 3.6

Issues #12067: Merge hash recommendation from 3.5 [#12067]

Martin Panter vadmium+py@gmail.com
date	Sun, 29 Jan 2017 10:07:26 +0000
parents	b33c3f26eefa(current diff)8c9a86aa222e(diff)
children	cdcb33f37bf3 9dbb7bbc1449
files	Doc/reference/expressions.rst
diffstat	1 files changed, 4 insertions(+), 0 deletions(-)[+] [-] Doc/reference/expressions.rst 4

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--- a/Doc/reference/expressions.rst +++ b/Doc/reference/expressions.rst @@ -1415,6 +1415,10 @@ some consistency rules, if possible: 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.