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From: Leon Barrett <Leon.Barrett@sony.com>
Date: Fri, 16 Jan 2026 17:15:38 -0800
Subject: Support `get_origin(Union[...])` in python 3.14
In Python 3.14, `Union` is no longer a `typingGenericAlias`, so
`get_origin(int | str)` didn't return `Union`. This changes that by
explicitly checking for `is_union_type`. This adds a test for
`get_origin(Union[...])`.
Origin: upstream, https://github.com/ilevkivskyi/typing_inspect/pull/119
Bug-Debian: https://bugs.debian.org/1123326
Last-Update: 2026-02-16
---
test_typing_inspect.py | 1 +
typing_inspect.py | 8 +++++++-
2 files changed, 8 insertions(+), 1 deletion(-)
diff --git a/test_typing_inspect.py b/test_typing_inspect.py
index df7ed36..4d88378 100644
--- a/test_typing_inspect.py
+++ b/test_typing_inspect.py
@@ -355,6 +355,7 @@ class GetUtilityTestCase(TestCase):
if GENERIC_TUPLE_PARAMETRIZABLE:
tp = List[Tuple[T, T]][int]
self.assertEqual(get_origin(tp), list if NEW_TYPING else List)
+ self.assertIs(get_origin(Union[str, int]), typing.Union)
def test_parameters(self):
T = TypeVar('T')
diff --git a/typing_inspect.py b/typing_inspect.py
index 7605026..b7da0dd 100644
--- a/typing_inspect.py
+++ b/typing_inspect.py
@@ -359,7 +359,13 @@ def get_origin(tp):
get_origin(List[Tuple[T, T]][int]) == list # List prior to Python 3.7
"""
if NEW_TYPING:
- if isinstance(tp, typingGenericAlias):
+ if (
+ isinstance(tp, typingGenericAlias) or
+ # In Python 3.14, Union[...] is not an instance of
+ # typingGenericAlias, but it does have an `__origin__`, so check for
+ # Unions explicitly.
+ is_union_type(tp)
+ ):
return tp.__origin__ if tp.__origin__ is not ClassVar else None
if tp is Generic:
return Generic
|
