example.py

from abc import ABCMeta, abstractmethod                                                                                           

class BaseABC(object):
    __metaclass__ = ABCMeta

    @abstractmethod
    def __init__(self, *args, **kwargs):
        pass

    @abstractmethod
    def foo(self):
        pass


class Subclass(BaseABC):

    def __init__(self):
        print('poop') 

    def foo(self):
        pass

assert issubclass(Subclass, BaseABC)

def main():
    sc = Subclass('testing')


if __name__ == "__main__":
    main()