Method __subclasscheck__

code/interface.py:94–98

(cls, subclass)

        return cls.__subclasscheck__(type(instance))

    def __subclasscheck__(cls, subclass):
        return (hasattr(subclass, 'name') and
                callable(subclass.name) and
                hasattr(subclass, 'age') and
                callable(subclass.age))
# The base class PersonSuper
class PersonSuper:
    """A person superclass"""