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Diffstat (limited to 'Doc/reference/expressions.rst')
| -rw-r--r-- | Doc/reference/expressions.rst | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Doc/reference/expressions.rst b/Doc/reference/expressions.rst index b37df92d59..3a4b80557c 100644 --- 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. |