import abc

class A(abc.ABC):
    @classmethod
    @property
    @abc.abstractmethod
    def type(cls):
        raise NotImplementedError
    
class B(A, metaclass=abc.ABCMeta):
    @abc.abstractmethod
    def other(self):
        raise NotImplementedError
    
class C(B):
    @classmethod
    @property
    def type(cls):
        return 'C'

    def other(self):
        print('other')

c = C()
c.other()

Traceback (most recent call last):
  File "C:\Users\Justin Baudisch\Desktop\test.py", line 10, in <module>
    class B(A, metaclass=abc.ABCMeta):
  File "C:\Program Files\Python310\lib\abc.py", line 107, in __new__
    _abc_init(cls)
  File "C:\Users\Justin Baudisch\Desktop\test.py", line 8, in type
    raise NotImplementedError
NotImplementedError