python中类对象的介绍

class 类名:

class Animal:

    pass  # 占位，空语句

print(type(Animal))

print("Animal的地址:",id(Animal)) #2058217676696

dog = Animal #创建类对象

dog2 = dog()

print("dog的地址:",id(dog)) #2058217676696

print(dog2) # <__main__.Animal object at 0x000001DF37D5B848>