不同类型的方法访问不同类型的属性规律

class Person:
    # 类属性
    age = 0
    def shilifangfa(self):
        print(self) # <__main__.Person object at 0x00000221C61E0FD0>
        print(self.age) # 0
        print(self.num) # 10
    @classmethod
    def leifangfa(cls):
        print(cls)
        print(cls.age)
        print(cls.num) # 报错
    @staticmethod
    def jingtaifangfa():
        print()

p = Person()

# 实例属性
p.num = 10
p.leifangfa()
# p.shilifangfa()
# 访问类属性
# print(Person.age)
#  # 通过实例来访问类属性
# print(p.age)
#
# # 实例属性
# print(p.num) # 10