[ python-Bugs-1225107 ] inspect.isclass() fails with custom __getattr__

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Bugs item #1225107, was opened at 2005-06-21 14:20
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Category: Python Library
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Jeremy Kloth (jkloth)
Assigned to: Nobody/Anonymous (nobody)
Summary: inspect.isclass() fails with custom __getattr__

Initial Comment:
inspect.isclass() can return True for instances of classes   
which define a __getattr__ method.  For example:   
   
>>> class Namespace(unicode):   
...    def __getattr__(self, attr):   
...       return '<%s>' % (self + attr)   
...   
>>> inspect.isclass(Namespace('foo'))   
True   
   
Changing inspect.isclass() to:   
  return isinstance(object, (types.ClassType, type))   
solves this issue.   
   
The check for __bases__ is no longer need due to   
type/class unification.   

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