python pass的作用

class Phone:

IMEI = None # 序列号

producer = "ITCAST" # 厂商

def call_by_4g(self):
    print("4g通话")

class Phone2022(Phone):

face_id = "10001" # 面部识别ID

def call_by_5g(self):
    print("2022年新功能：5g通话")

class NFCReader:

nfc_type = "第五代"

producer = "HM"

def read_card(self):
    print("NFC读卡")

def write_card(self): 
    print("NFC写卡") 

class RemoteControl:

rc_type = "红外遥控"

def control(self): 
    print("红外遥控开启了") 

class MyPhone(Phone2022, NFCReader, RemoteControl):

**#pass作用：我这个类继承其他的类，但是我这个类除了继承，自己就没有自己的成员变量和方法，需要用pass保证这里语法不报错，pass本身表示是空（None）的意思**

pass  

myPhone1 = MyPhone()

print(myPhone1.call_by_5g())

print(myPhone1.read_card())

print(myPhone1.write_card())