Python: 设计模式之工厂模式例(1)

 1 #!/usr/bin/env python
 2 #coding=utf-8
 3 # 
 4 # 工厂模式一例
 5 # 版权所有 2014 yao_yu (http://blog.csdn.net/yao_yu_126)
 6 # 本代码以MIT许可协议发布
 7 # 2014-04-22
 8 # 
 9 
10 class Cube(object):
11     pass
12 
13 class Cuboid(object):
14     pass
15     
16 class Cylinder(object):
17     pass
18 
19 class Sphere(object):
20     pass
21 
22 class ObjectFactory(dict):
23     def register(self, klass):
24         klass_name = klass.__name__
25         if klass_name not in self:
26             self[klass_name] = klass
27     def create(self, klass_name):
28         if klass_name in self:
29             return self[klass_name]
30 
31 object_factory = ObjectFactory()
32 for klass in (Cube, Cuboid, Cylinder, Sphere):
33     object_factory.register(klass)
34 
35 if __name__ == '__main__':
36     def main():
37         for klass in (Cube, Cuboid, Cylinder, Sphere):
38             obj = object_factory.create(klass.__name__)()
39             print(obj.__class__.__name__)
40     
41     main()
42

输出结果

Cube
Cuboid
Cylinder
Sphere

Python: 设计模式 之 工厂模式例(1)

Python: 设计模式之工厂模式例(1)