119子类依旧使用父类的属性和方法

class Phone:
    IMEI=2020001
    producer="apple"
    def call_by_4g(self):
        print("4g通话")


class MyPhone2(Phone):
    IMEI = 2023001
    producer = "banana"


    def call_by_4g(self):
        old_return_value=super().call_by_4g()
        print("原始的厂商："+super().producer)
        return old_return_value

#实例化某个对象

phone2=MyPhone2()

phone2.call_by_4g()# 老的call_by_4g 方法返回值


'''

  4g通话
  原始的厂商：apple

'''