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author | Jeffrey Yasskin <jyasskin@gmail.com> | 2008-03-17 16:31:21 (GMT) |
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committer | Jeffrey Yasskin <jyasskin@gmail.com> | 2008-03-17 16:31:21 (GMT) |
commit | b9e15f7555ed6596fa0af15f457389827ecab8f6 (patch) | |
tree | 52c49b8205f1c41e65909ac66f5daf2536cd4899 /Lib/test | |
parent | 1b4e45bab940d385386e9442de5f5fbc7983dd50 (diff) | |
download | cpython-b9e15f7555ed6596fa0af15f457389827ecab8f6.zip cpython-b9e15f7555ed6596fa0af15f457389827ecab8f6.tar.gz cpython-b9e15f7555ed6596fa0af15f457389827ecab8f6.tar.bz2 |
Make isinstance(OldstyleClass, NewstyleClass) return False instead of raising
an exception. Issue reported by Joseph Armbruster.
Diffstat (limited to 'Lib/test')
-rw-r--r-- | Lib/test/test_abc.py | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/Lib/test/test_abc.py b/Lib/test/test_abc.py index f1c0c3b..8fed220 100644 --- a/Lib/test/test_abc.py +++ b/Lib/test/test_abc.py @@ -70,6 +70,17 @@ class TestABC(unittest.TestCase): self.assertFalse(issubclass(OldstyleClass, A)) self.assertFalse(issubclass(A, OldstyleClass)) + def test_isinstance_class(self): + class A: + __metaclass__ = abc.ABCMeta + class OldstyleClass: + pass + self.assertFalse(isinstance(OldstyleClass, A)) + self.assertTrue(isinstance(OldstyleClass, type(OldstyleClass))) + self.assertFalse(isinstance(A, OldstyleClass)) + # This raises a recursion depth error, but is low-priority: + # self.assertTrue(isinstance(A, abc.ABCMeta)) + def test_registration_basics(self): class A: __metaclass__ = abc.ABCMeta |