获取继承基类类型的元组

class BaseClass:
    pass

class SubClass(BaseClass):
    pass

class AnotherSubClass(BaseClass):
    pass

class ChildClass(SubClass, AnotherSubClass):
    pass

def get_base_classes(cls):
    mro = cls.mro()
    base_classes = tuple(c for c in mro if c != cls)
    return base_classes

child = ChildClass()
base_classes = get_base_classes(child)

print(base_classes)

(<class '__main__.SubClass'>, <class '__main__.AnotherSubClass'>, <class '__main__.BaseClass'>)