https://github.com/python/cpython/commit/4fb2bb6edc0159ea32cf4f90760fae7966ea1d49
commit: 4fb2bb6edc0159ea32cf4f90760fae7966ea1d49
branch: 3.12
author: Miss Islington (bot) <[email protected]>
committer: iritkatriel <[email protected]>
date: 2025-02-20T01:54:37Z
summary:

[3.12] gh-130250: fix cleanup in test (impacts refleaks runs) (GH-130329) 
(#130331)

gh-130250: fix cleanup in test (impacts refleaks runs) (GH-130329)
(cherry picked from commit c718c6be0f82af5eb0e57615ce323242155ff014)

Co-authored-by: Irit Katriel <[email protected]>

files:
M Lib/test/test_traceback.py

diff --git a/Lib/test/test_traceback.py b/Lib/test/test_traceback.py
index be431cc5631fbf..0b8462dfd5265f 100644
--- a/Lib/test/test_traceback.py
+++ b/Lib/test/test_traceback.py
@@ -330,10 +330,13 @@ def test_print_exception_exc(self):
 
     def test_print_last(self):
         self.assertIsNone(getattr(sys, "last_exc", None))
-        sys.last_exc = ValueError(42)
-        output = StringIO()
-        traceback.print_last(file=output)
-        self.assertEqual(output.getvalue(), "ValueError: 42\n")
+        try:
+            sys.last_exc = ValueError(42)
+            output = StringIO()
+            traceback.print_last(file=output)
+            self.assertEqual(output.getvalue(), "ValueError: 42\n")
+        finally:
+            sys.last_exc = None
 
     def test_format_exception_exc(self):
         e = Exception("projector")

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