python封装，继承，复写详解

1.封装

2.继承

复写和使用父类成员

1.封装

class phone:__voltage = 0.5def __keepsinglecore(self):print("单核运行")def callby5g(self):if self.__voltage >= 1:print("5g通话开启")else:self.__keepsinglecore()print("不能开启5g通话")p = phone()
p.callby5g()

2.继承

class phone:imei = Noneproducer = "aa"def call_by_4g(self):print("4g通话")class phone2024(phone):face_id = 1def call_by_5g(self):print("5g通话")p = phone2024()
print(p.producer)
p.call_by_4g()

如果是多继承并且有同名的，会以之前的为优先，之后的会被覆盖

class phone:imei = Noneproducer = "aa"def call_by_4g(self):print("4g通话")class nfc:def read(self):print("nfc读卡")class phone2024(phone,nfc):pass#用pass表示这里是空的p = phone2024()
print(p.producer)
p.call_by_4g()
p.read()

复写和使用父类成员

class phone:imei = Noneproducer = "aa"def call_by_4g(self):print("4g通话")class nfc:def read(self):print("nfc读卡")class phone2024(phone,nfc):producer = "bb"def read(self):print("nfc读卡功能启动")#用pass表示这里是空的p = phone2024()
print(p.producer)
p.read()

class phone:imei = Noneproducer = "aa"def call_by_4g(self):print("4g通话")class nfc:def read(self):print("nfc读卡")class phone2024(phone,nfc):producer = "bb"def read(self):print("nfc读卡功能启动")#方式1phone.call_by_4g(self)print(phone.producer)#方式2super().call_by_4g()print(super().producer)#用pass表示这里是空的p = phone2024()
print(p.producer)
p.read()