class Camera():

    def take_photo(self):

        print("拍照")

class MP3():

    def play_mp3(self):

        print("播放MP3")

class Iphone(Camera,MP3):

    def nfc(self):

        print("NFC 功能")

# 多类继承

iphone = Iphone()

iphone.take_photo()

iphone.play_mp3()

iphone.nfc()