Inheritance such as Python

# Class of Operation instance # subclass Ecar Inherits parent class car and uses instance battery as property class car ():    def __init__ (self, name, model, year):        self.name = name        Self.model = model        self.year = year        self.odometer = 0  # mileage, the default value is 0    def des_info (self):        print ( Self.name.title (), Self.model, Self.year, Self.odometer)    def set_odometer (self, num):        self.odometer = num    def get_odometer (self):        print (' Vehicle mileage: ', Self.odometer) class Ecar (CAR):    ' Subclass Ecar inherits the parent class car, has a special attribute battery '    def __init__ (self, name, model, year):        ' Initialize the parent class property, and then initialize the Unique property ' '        super (). __INIT__ ( Name, model, year)        self.battery = Battery ()  # Use Instance as attribute    def get_meter (self):        print (' Maximum mileage: ', Self.battery.get_meter ()) class battery ():    def __init__ (self, size=70):        self.size = size    def get_meter (self):        "The maximum mileage the battery can travel" ' Miles        = self.size * 5        return miles

# test Code

My_car = car (' Audi ', ' A4 ', ") My_car.des_info () My_car.set_odometer (+) my_car.get_odometer () Your_car = Ecar (' Tesla ', ' Model S ', Your_car.des_info () Your_car.get_meter ()

　　

Inheritance such as Python