You’d see following stacktrace (issue reported
here). Until we have an
official fix, a temporary patch is available on this
gist. Tested on Python 3.3.2
(x86)/Windows 8. Enjoy!
File "C:\Python33\lib\site-packages\comtypes\__init__.py", line 1049, in class IUnknown(object, metaclass=_cominterface_meta): File "C:\Python33\lib\site-packages\comtypes\__init__.py", line 281, in __new__ class _(partial.partial, POINTER(p)): TypeError: metaclass conflict: the metaclass of a derived class must be a (non-strict) subclass of the metaclasses of all its bases