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Merged revisions 77788-77789 via svnmerge from

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

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  r77788 | benjamin.peterson | 2010-01-26 20:15:28 -0600 (Tue, 26 Jan 2010) | 1 line

  for UserDict to be compatible with abcs, it must subclass object
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  r77789 | benjamin.peterson | 2010-01-26 20:16:42 -0600 (Tue, 26 Jan 2010) | 1 line

  raise a clear TypeError when trying to register a non-class
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This commit is contained in:
Benjamin Peterson 2010-01-27 02:24:25 +00:00
parent 01bd3ece5c
commit 3059caadc6
4 changed files with 9 additions and 2 deletions
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2
Lib/abc.py
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@ -96,7 +96,7 @@ class ABCMeta(type):
def register(cls, subclass):
"""Register a virtual subclass of an ABC."""
if not isinstance(cls, type):
if not isinstance(subclass, type):
raise TypeError("Can only register classes")
if issubclass(subclass, cls):
return # Already a subclass