From d5117b577e3f20ede93e6260a4b44c9e03929410 Mon Sep 17 00:00:00 2001
From: Ned Batchelder <ned@nedbatchelder.com>
Date: Sat, 27 Dec 2025 08:16:39 -0500
Subject: [PATCH] [threading] trace functions can be None

---
 stdlib/threading.pyi | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/stdlib/threading.pyi b/stdlib/threading.pyi
index 8a2b68dcd1cf..abc7fe7e8124 100644
--- a/stdlib/threading.pyi
+++ b/stdlib/threading.pyi
@@ -54,12 +54,12 @@ def currentThread() -> Thread: ...
 def get_ident() -> int: ...
 def enumerate() -> list[Thread]: ...
 def main_thread() -> Thread: ...
-def settrace(func: TraceFunction) -> None: ...
+def settrace(func: TraceFunction | None) -> None: ...
 def setprofile(func: ProfileFunction | None) -> None: ...
 
 if sys.version_info >= (3, 12):
     def setprofile_all_threads(func: ProfileFunction | None) -> None: ...
-    def settrace_all_threads(func: TraceFunction) -> None: ...
+    def settrace_all_threads(func: TraceFunction | None) -> None: ...
 
 if sys.version_info >= (3, 10):
     def gettrace() -> TraceFunction | None: ...