From bcba0b17e53d2f05eda0f35b8ac1b82b0242bec1 Mon Sep 17 00:00:00 2001 From: Irit Katriel <1055913+iritkatriel@users.noreply.github.com> Date: Thu, 20 Feb 2025 11:29:18 +0000 Subject: [PATCH] gh-130250: use support.swap_attr() in test and don't assume we're beginning with a clean system state (GH-130342) (cherry picked from commit 048ee2d5ec761296ef67f5c59aee1f24408b12db) Co-authored-by: Irit Katriel <1055913+iritkatriel@users.noreply.github.com> --- Lib/test/test_traceback.py | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) diff --git a/Lib/test/test_traceback.py b/Lib/test/test_traceback.py index 0b8462dfd5265f..8300e511cf4232 100644 --- a/Lib/test/test_traceback.py +++ b/Lib/test/test_traceback.py @@ -329,14 +329,10 @@ def test_print_exception_exc(self): self.assertEqual(output.getvalue(), "Exception: projector\n") def test_print_last(self): - self.assertIsNone(getattr(sys, "last_exc", None)) - try: - sys.last_exc = ValueError(42) + with support.swap_attr(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")