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bpo-42345: Fix hash implementation of typing.Literal (GH-23383)

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Fix hash implementation of `typing.Literal`.

Update docs regarding `typing.Litaral` caching.

Base implementation was done in PR GH-23294.
(cherry picked from commit 1b54077ff6)

Co-authored-by: Yurii Karabas <1998uriyyo@gmail.com>
This commit is contained in:
Miss Islington (bot) 2020-11-19 08:51:01 -08:00 • committed by GitHub
parent 87c87b5bd6
commit 2acd9d0c6c
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3 changed files with 9 additions and 4 deletions
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Lib/typing.py
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@ -932,7 +932,7 @@ class _LiteralGenericAlias(_GenericAlias, _root=True):
return set(_value_and_type_iter(self.__args__)) == set(_value_and_type_iter(other.__args__))
def __hash__(self):
return hash(tuple(_value_and_type_iter(self.__args__)))
return hash(frozenset(_value_and_type_iter(self.__args__)))
class Generic: