设计模式中的原型模式在Python程序中的应用示例

#!/usr/bin/env python 
#encoding: utf-8 
from copy import copy, deepcopy 
 
class test_obj: 
 def __init__(self, id): 
 self.id = id 
 
class proto_type: 
 def __init__(self, name, id): 
 self.name = name 
 self.obj = test_obj(id) 
 
 def display(self): 
 print self.name 
 print self.obj.id 
 
 def clone(self): 
 return copy(self) 
 
 def deep_clone(self): 
 return deepcopy(self) 
 
 
if '__main__' == __name__: 
 obj1 = proto_type('name1', 1) 
 obj2 = obj1.clone() 
 obj3 = obj1.deep_clone() 
 obj2.name = 'name2' 
 obj2.obj.id = 2 
 obj3.name = 'name3' 
 obj3.obj.id = 3 
 obj1.display() 
 obj2.display() 
 obj3.display() 
 print obj1.__class__ 
 print obj2.__class__ 
 print obj3.__class__ 

name1 
2 #因为obj2是浅复制，所以对象没有被复制，导致新对象的修改影响了原来的就对象的值 
name2 
2 
name3 
3 #因为是深复制，所以不会影响之前的旧对象 
__main__.proto_type 
__main__.proto_type 
__main__.proto_type 

#encoding=utf-8 
# 
#by panda 
#原型模式 
 
import copy 
 
def printInfo(info): 
 print unicode(info, 'utf-8').encode('gbk') 
 
#拷贝接口 
class ICloneable: 
 def shallowClone(self): 
 return copy.copy(self) 
 
 def deepClone(self): 
 return copy.deepcopy(self) 
 
#工作经历 
class WorkExperience(ICloneable): 
 workData = "" 
 company = "" 
 pass 
 
#简历 
class Resume(ICloneable): 
 name = "" 
 sex = '未知' 
 age = 0 
 work = None 
 
 def __init__(self, name, work = WorkExperience()): 
 self.name = name 
 self.work = work; 
 
 def setPersonInfo(self, sex, age): 
 self.sex = sex 
 self.age = age 
 
 def setWorkExperience(self, workData, company): 
 self.work.workData = workData 
 self.work.company = company 
 
 def display(self): 
 printInfo('%s, %s, %d' % (self.name,self.sex,self.age)) 
 printInfo('%s, %s' % (self.work.workData, self.work.company)) 
 
def clientUI(): 
 a = Resume('大鸟') 
 a.setPersonInfo('男',29) 
 a.setWorkExperience("1998-2000","XX公司") 
 
 #浅拷贝 
 b = a.shallowClone() 
 b.setWorkExperience("2000-2006","YY公司") 
 
 #深拷贝 
 c = a.deepClone() 
 c.setWorkExperience("2006-2009","ZZ公司") 
 
 b.display() 
 a.display() 
 c.display() 
 return 
 
if __name__ == '__main__': 
 clientUI();