google app engine - Python 2.7 Combine abc.abstractmethod and classmethod

Question

How do I create a decorator for an abstract class method in Python 2.7?

Yes, this is similar to this question, except I would like to combine abc.abstractmethod and classmethod, instead of staticmethod. Also, it looks like abc.abstractclassmethod was added in Python 3 (I think?), but I'm using Google App Engine, so I'm currently limited to Python 2.7

Thanks in advance.

Answer 1

Waitting for answers