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| author | Jeffrey Yasskin <jyasskin@gmail.com> | 2008-01-07 06:09:40 +0000 |
|---|---|---|
| committer | Jeffrey Yasskin <jyasskin@gmail.com> | 2008-01-07 06:09:40 +0000 |
| commit | fd1c24518be99e3e2d0891bf7d2c94fbd4d39367 (patch) | |
| tree | ae5a461b96e832a20a548ba62a993876b62637be /Lib/abc.py | |
| parent | 1db6f80cd5259841f1387f14bf773ebc3c946502 (diff) | |
| download | cpython-git-fd1c24518be99e3e2d0891bf7d2c94fbd4d39367.tar.gz | |
Fix issue 1747: allow classic classes to be checked for being subclasses of
ABCs.
Diffstat (limited to 'Lib/abc.py')
| -rw-r--r-- | Lib/abc.py | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/Lib/abc.py b/Lib/abc.py index 685702909c..1ce38a81c8 100644 --- a/Lib/abc.py +++ b/Lib/abc.py @@ -188,7 +188,7 @@ class ABCMeta(type): cls._abc_negative_cache.add(subclass) return ok # Check if it's a direct subclass - if cls in subclass.__mro__: + if cls in getattr(subclass, '__mro__', ()): cls._abc_cache.add(subclass) return True # Check if it's a subclass of a registered class (recursive) |