From e9d5cc78162c54aaac70315cb6303f8a3a1e8b17 Mon Sep 17 00:00:00 2001
From: Marc Mueller <30130371+cdce8p@users.noreply.github.com>
Date: Mon, 6 Oct 2025 14:36:31 +0200
Subject: [PATCH] Fix PEP 728 TypedDict.__closed__ annotation in
 typing_extensions (#14839)

---
 stdlib/typing_extensions.pyi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/stdlib/typing_extensions.pyi b/stdlib/typing_extensions.pyi
index f5ea13f67..5fd3f4578 100644
--- a/stdlib/typing_extensions.pyi
+++ b/stdlib/typing_extensions.pyi
@@ -239,7 +239,7 @@ class _TypedDict(Mapping[str, object], metaclass=abc.ABCMeta):
     __readonly_keys__: ClassVar[frozenset[str]]
     __mutable_keys__: ClassVar[frozenset[str]]
     # PEP 728
-    __closed__: ClassVar[bool]
+    __closed__: ClassVar[bool | None]
     __extra_items__: ClassVar[AnnotationForm]
     def copy(self) -> Self: ...
     # Using Never so that only calls using mypy plugin hook that specialize the signature