Nov 25, 2025 · Nov 20, 2025 · Nov 20, 2025 · Nov 20, 2025 · Nov 20, 2025 · Nov 22, 2025
diff --git a/Lib/test/test_pdb.py b/Lib/test/test_pdb.py
    def test_find_function_found(self):
        self._assert_find_function(
            """\

 def foo():
    pass

            ('bœr', 5),
        )

    def test_print_stack_entry_uses_dynamic_line_prefix(self):
        """Test that pdb.line_prefix binding is dynamic (gh-141781)."""
        stdout = io.StringIO()
        p = pdb.Pdb(stdout=stdout)

        # Get the current frame to use for printing
        frame = sys._getframe()

        with support.swap_attr(pdb, 'line_prefix', 'CUSTOM_PREFIX> '):
            p.print_stack_entry((frame, frame.f_lineno))

        # Check if the custom prefix appeared in the output
        self.assertIn('CUSTOM_PREFIX> ', stdout.getvalue())

    def test_find_function_found_with_encoding_cookie(self):
        self._assert_find_function(
            """\
Original file line number	Diff line number	Diff line change
Expand Up		@@ -3567,6 +3567,7 @@ def test_find_function_empty_file(self):
		def test_find_function_found(self):
		self._assert_find_function(
		"""\

		def foo():
		pass

Expand All		@@ -3580,6 +3581,20 @@ def quux():
		('bœr', 5),
		)

		def test_print_stack_entry_uses_dynamic_line_prefix(self):
		"""Test that pdb.line_prefix binding is dynamic (gh-141781)."""
		stdout = io.StringIO()
		p = pdb.Pdb(stdout=stdout)

		# Get the current frame to use for printing
		frame = sys._getframe()

		with support.swap_attr(pdb, 'line_prefix', 'CUSTOM_PREFIX> '):
		p.print_stack_entry((frame, frame.f_lineno))

		# Check if the custom prefix appeared in the output
		self.assertIn('CUSTOM_PREFIX> ', stdout.getvalue())

		def test_find_function_found_with_encoding_cookie(self):
		self._assert_find_function(
		"""\
Expand Down