子类继承父类

class Phone:
    IMEI=2020001
    producer="apple"
    def call_by_4g(self):
        print("4g通话")
class Phone2023(Phone):
    face_id="2233"
    def call_by_5g(self):
        print(f"2023最新5g视频通话")


#实例化某个对象
phone1=Phone2023()
print(phone1.producer)
phone1.call_by_4g()
phone1.call_by_5g()

'''
apple
4g通话
2023最新5g视频通话
'''