'''

 2018-5-2 18:43:54

 设计4s店类

 设计模式:

 简单工厂模式(通过一个类的分离模式)

 讨论耦合性的问题

 类与类之间应该是低耦合性

 通过有个 初始化 __init__ 来解耦

 这样就是工厂模式

 父类方法名就是接口,子类里面实现

 (流程在基类里面定义好,然后在子类里面实现)

 '''

 class Store(object):

     def select_car(self):

         pass

     def order(self,car_type):

         return self.select_car(car_type)

 class BMWCarStore(Store):

     def select_car(self,car_type):

         return BMWCarStore().select_car_by_type(car_type)

 class CarStore(Store):

     def select_car(self,car_type):

         return Factory().select_car_by_type(car_type)

 class   BMWFactory(object):

     def select_car_by_type(self,car_type):

         pass

 class CarStore(object):

     def __init__(self):

         self.factory = Factory()

     def order(self,car_type):

         return self.factory(car_type)

 class Factory(object):

     def select_car_by_type(car_type):

         if car_type=="索纳塔":

             return Suonata()

         elif car_type=="名图":

             return Mingtu()

         elif car_type=="ix35":

             return Ix35()

 class Car(object):

     def move(self):

         print("车在移动")

     def music(self):

         print("车在播放音乐")

     def stop(self):

         print("车在停止,,,,,,")

 class Suonata(Car):

     def move(self):

         print("车在移动")

     def music(self):

         print("车在播放音乐")

     def stop(self):

         print("车在停止,,,,,,")

 class Mingtu(Car):

     pass

 class Ix35(Car):

     pass

 car_store =CarStore()

 car =car_store.order("索纳塔")

 car.move()

 car.music()

 car.stop()

 bmw_store =BMWCarStore()

 bmw =bmw_store.order("720li")