Merged revisions 68676 via svnmerge from

svn+ssh://pythondev@svn.python.org/python/trunk

........
  r68676 | benjamin.peterson | 2009-01-17 16:27:54 -0600 (Sat, 17 Jan 2009) | 1 line

  fix inspect.isclass() on instances with a custom __getattr__ #1225107
........

Lib/inspect.py

@@ -63,7 +63,7 @@ def isclass(object):
     Class objects provide these attributes:
         __doc__         documentation string
         __module__      name of module in which this class was defined"""
-    return isinstance(object, type) or hasattr(object, '__bases__')
+    return isinstance(object, type)
 
 def ismethod(object):
     """Return true if the object is an instance method.

Lib/test/test_inspect.py

@@ -74,7 +74,6 @@ def test_sixteen(self):
     def test_excluding_predicates(self):
         self.istest(inspect.isbuiltin, 'sys.exit')
         self.istest(inspect.isbuiltin, '[].append')
-        self.istest(inspect.isclass, 'mod.StupidGit')
         self.istest(inspect.iscode, 'mod.spam.__code__')
         self.istest(inspect.isframe, 'tb.tb_frame')
         self.istest(inspect.isfunction, 'mod.spam')
@@ -99,6 +98,15 @@ def test_isroutine(self):
         self.assert_(inspect.isroutine(mod.spam))
         self.assert_(inspect.isroutine([].count))
 
+    def test_isclass(self):
+        self.istest(inspect.isclass, 'mod.StupidGit')
+        self.assertTrue(inspect.isclass(list))
+
+        class CustomGetattr(object):
+            def __getattr__(self, attr):
+                return None
+        self.assertFalse(inspect.isclass(CustomGetattr()))
+
     def test_get_slot_members(self):
         class C(object):
             __slots__ = ("a", "b")