
# num = 10
#
# print(num.__class__)
#
# num = "abc"
#
# print(num.__class__)
#
# print("*"*50)
# print(int.__class__)
# print(str.__class__)
# print(type.__class__)

# def run(self):
#     print(self)
#
# xxx = type("dog",(),{"age": 10, "run": run})
#
# # print(xxx.__name__)
# # print(xxx.__dict__)
# d = xxx()
# d.run()

class Animal:
    pass

class Person(Animal):
    # __metaclass__ = xxx
    pass

