From 238f68dd9a7fbe287023150c50d636474052766c Mon Sep 17 00:00:00 2001
From: Sam Gross <colesbury@gmail.com>
Date: Mon, 24 Mar 2025 16:00:06 +0000
Subject: [PATCH] gh-131677: Fix flaky test_lru_cache_threaded3

The call to `with self.subTest(...)` was not thread-safe.
---
 Lib/test/test_functools.py | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/Lib/test/test_functools.py b/Lib/test/test_functools.py
index 0bbfcfd0369cf3..2b49615178f136 100644
--- a/Lib/test/test_functools.py
+++ b/Lib/test/test_functools.py
@@ -1934,8 +1934,7 @@ def f(x):
             time.sleep(.01)
             return 3 * x
         def test(i, x):
-            with self.subTest(thread=i):
-                self.assertEqual(f(x), 3 * x, i)
+            self.assertEqual(f(x), 3 * x, i)
         threads = [threading.Thread(target=test, args=(i, v))
                    for i, v in enumerate([1, 2, 2, 3, 2])]
         with threading_helper.start_threads(threads):