工厂方法模式

 1 class LeiFeng(object):
 2 
 3     def Sweep(self):
 4         print("扫地")
 5 
 6     def Wash(self):
 7         print("洗衣")
 8 
 9     def BuyRice(self):
10         print("买米")
11 
12 
13 class IFactory(LeiFeng):
14 
15     def CreateLeiFeng(self):
16         pass
17 
18 
19 # 大学生
20 class Undergraduate(LeiFeng):
21     pass
22 
23 
24 # 新增社区服务者
25 class Volunteer(LeiFeng):
26     pass
27 
28 
29 # 学习雷锋的大学生工厂
30 class UndergraduateFactory(IFactory):
31 
32     def CreateLeiFeng(self):
33         return Undergraduate()
34 
35 
36 # 新增一个社区服务者的工厂
37 class VolunteerFactory(IFactory):
38 
39     def CreateLeiFeng(self):
40         return Volunteer()
41 
42 
43 if __name__ == "__main__":
44     student = UndergraduateFactory()
45     volunteer = VolunteerFactory()
46     student.BuyRice()
47     student.Sweep()
48     volunteer.Wash()