From 5ba2e4989e0527f24d0ea7ca257eb42c8a59440f Mon Sep 17 00:00:00 2001
From: Joren Hammudoglu <jhammudoglu@gmail.com>
Date: Sat, 15 Mar 2025 18:51:36 +0100
Subject: [PATCH] Add `types.UnionType.__parameters__` (#13628)

annotate the `types.UnionType.__parameters__` property
---
 stdlib/types.pyi | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/stdlib/types.pyi b/stdlib/types.pyi
index 849db3ece..542979d4a 100644
--- a/stdlib/types.pyi
+++ b/stdlib/types.pyi
@@ -687,6 +687,8 @@ if sys.version_info >= (3, 10):
     class UnionType:
         @property
         def __args__(self) -> tuple[Any, ...]: ...
+        @property
+        def __parameters__(self) -> tuple[Any, ...]: ...
         def __or__(self, value: Any, /) -> UnionType: ...
         def __ror__(self, value: Any, /) -> UnionType: ...
         def __eq__(self, value: object, /) -> bool: ...