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[3.14] gh-133925: Make typing._UnionGenericAlias hashable (GH-133929) #133936

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Merged
merged 1 commit into from
May 12, 2025
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[3.14] gh-133925: Make typing._UnionGenericAlias hashable (GH-133929) #133936

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3 changes: 3 additions & 0 deletions Lib/test/test_typing.py
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Original file line number Diff line number Diff line change
Expand Up @@ -10731,6 +10731,9 @@ def test_eq(self):
with self.assertWarns(DeprecationWarning):
self.assertNotEqual(int, typing._UnionGenericAlias)

def test_hashable(self):
self.assertEqual(hash(typing._UnionGenericAlias), hash(Union))


def load_tests(loader, tests, pattern):
import doctest
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3 changes: 3 additions & 0 deletions Lib/typing.py
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Expand Up @@ -1649,6 +1649,9 @@ def __eq__(self, other):
return True
return NotImplemented

def __hash__(self):
return hash(Union)


class _UnionGenericAlias(metaclass=_UnionGenericAliasMeta):
"""Compatibility hack.
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1 change: 1 addition & 0 deletions Misc/NEWS.d/next/Library/2025-05-12-06-52-10.gh-issue-133925.elInBY.rst
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@@ -0,0 +1 @@
Make the private class ``typing._UnionGenericAlias`` hashable.
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