From: LloydZ <35182391+cocolato@users.noreply.github.com>
Date: Tue, 2 Dec 2025 04:41:54 +0000 (+0800)
Subject: gh-59000: Fix pdb breakpoint resolution for class methods when module not imported... 
X-Git-Tag: v3.15.0a3~226
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5e58548ebe8f7ac8c6cb0bad775912caa4090515;p=thirdparty%2FPython%2Fcpython.git

gh-59000: Fix pdb breakpoint resolution for class methods when module not imported (#141949)
---

diff --git a/Lib/pdb.py b/Lib/pdb.py
index 60b713ebaf3d..18cee7e9ae60 100644
--- a/Lib/pdb.py
+++ b/Lib/pdb.py
@@ -1487,7 +1487,9 @@ class Pdb(bdb.Bdb, cmd.Cmd):
             f = self.lookupmodule(parts[0])
             if f:
                 fname = f
-            item = parts[1]
+                item = parts[1]
+            else:
+                return failed
         answer = find_function(item, self.canonic(fname))
         return answer or failed
 
diff --git a/Lib/test/test_pdb.py b/Lib/test/test_pdb.py
index 34dfc220c7ed..8d5827424998 100644
--- a/Lib/test/test_pdb.py
+++ b/Lib/test/test_pdb.py
@@ -4587,6 +4587,22 @@ def bœr():
             ]))
             self.assertIn('break in bar', stdout)
 
+    def test_issue_59000(self):
+        script = """
+            def foo():
+                pass
+
+            class C:
+                def foo(self):
+                    pass
+        """
+        commands = """
+            break C.foo
+            quit
+        """
+        stdout, stderr = self.run_pdb_script(script, commands)
+        self.assertIn("The specified object 'C.foo' is not a function", stdout)
+
 
 class ChecklineTests(unittest.TestCase):
     def setUp(self):
diff --git a/Misc/NEWS.d/next/Library/2025-11-25-16-00-29.gh-issue-59000.YtOyJy.rst b/Misc/NEWS.d/next/Library/2025-11-25-16-00-29.gh-issue-59000.YtOyJy.rst
new file mode 100644
index 000000000000..33ab8a0659e4
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2025-11-25-16-00-29.gh-issue-59000.YtOyJy.rst
@@ -0,0 +1 @@
+Fix :mod:`pdb` breakpoint resolution for class methods when the module defining the class is not imported.