メタクラスと継承ツリーの検証

metameta.py

import traceback

class MetaClassA(type):
    pass


class MetaClassAA(MetaClassA):
    pass


class MetaClassB(type):
    pass


class MetaClassAB(MetaClassA, MetaClassB):
    pass


class BaseMetaA(object):

    __metaclass__ = MetaClassA


class BaseMetaAA(object):

    __metaclass__ = MetaClassAA


class BaseMetaB(object):

    __metaclass__ = MetaClassB


class BaseMetaAB(object):

    __metaclass__ = MetaClassAB


class DerivedAAA(BaseMetaA, BaseMetaAA):
    pass


print type(DerivedAAA)


try:
    class DerivedAB(BaseMetaA, BaseMetaB):
        pass
except Exception, e:
    traceback.print_exc()