From: Tian Gao <gaogaotiantian@hotmail.com>
Date: Sat, 13 Jul 2024 18:55:22 +0000 (-0700)
Subject: gh-121651: Fix pdb header test (#121724)
X-Git-Tag: v3.14.0a1~1148
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=c0af6d4ff1705d9857c9f2e96acc142c5b8b84e9;p=thirdparty%2FPython%2Fcpython.git

gh-121651: Fix pdb header test (#121724)
---

diff --git a/Lib/test/test_pdb.py b/Lib/test/test_pdb.py
index 343e15a4edc1..f71856d3603d 100644
--- a/Lib/test/test_pdb.py
+++ b/Lib/test/test_pdb.py
@@ -3389,7 +3389,12 @@ def bœr():
         header = 'Nobody expects... blah, blah, blah'
         with ExitStack() as resources:
             resources.enter_context(patch('sys.stdout', stdout))
+            # patch pdb.Pdb.set_trace() to avoid entering the debugger
             resources.enter_context(patch.object(pdb.Pdb, 'set_trace'))
+            # We need to manually clear pdb.Pdb._last_pdb_instance so a
+            # new instance with stdout redirected could be created when
+            # pdb.set_trace() is called.
+            pdb.Pdb._last_pdb_instance = None
             pdb.set_trace(header=header)
         self.assertEqual(stdout.getvalue(), header + '\n')