[issue7994] object.__format__ should reject format strings

[R. David Murray]

R. David Murray added the comment:

NoneType is a subclass of object.

>>> class Foo(object):
...    pass
... 
>>> f = Foo()
>>> f.__format__
<built-in method __format__ of Foo object at 0xb71543b4>

ie: the exception is being raised by object.__format__, as provided for by this issue.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue7994>
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