Merged revisions 77788-77789 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk
........
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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diff --git a/Lib/abc.py b/Lib/abc.py
index 95126d8..8aeb2af 100644
--- a/Lib/abc.py
+++ b/Lib/abc.py
@@ -96,7 +96,7 @@
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