[issue28437] Class definition is not consistent with types.new_class

[Neil Girdhar]

Neil Girdhar added the comment:

>From your comment:

>>> MyDerivedDynamic = new_class("MyDerivedDynamic", (MyClass,), dict(metaclass=metaclass_callable))
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib64/python3.5/types.py", line 57, in new_class
    return meta(name, bases, ns, **kwds)
  File "<stdin>", line 2, in metaclass_callable
TypeError: metaclass conflict: the metaclass of a derived class must be a (non-strict) subclass of the metaclasses of all its bases

This is in the wrong place.  It should be tripping the exception you defined in Lib/types.py.  (It will do that if you replace metaclass_callable with OtherMetaclass.)

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue28437>
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