From: Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com>
Date: Thu, 20 Feb 2025 01:54:37 +0000 (+0100)
Subject: [3.12] gh-130250: fix cleanup in test (impacts refleaks runs) (GH-130329) (#130331)
X-Git-Tag: v3.12.10~195
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=4fb2bb6edc0159ea32cf4f90760fae7966ea1d49;p=thirdparty%2FPython%2Fcpython.git

[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 <1055913+iritkatriel@users.noreply.github.com>
---

diff --git a/Lib/test/test_traceback.py b/Lib/test/test_traceback.py
index be431cc5631f..0b8462dfd526 100644
--- a/Lib/test/test_traceback.py
+++ b/Lib/test/test_traceback.py
@@ -330,10 +330,13 @@ class TracebackCases(unittest.TestCase):
 
     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")