Python设计模式之原型模式实例详解

#!/usr/bin/env python
# -*- coding:utf-8 -*-
__author__ = 'Andy'
"""
大话设计模式
设计模式——原型模式
原型模式(Prototype Pattern):用原型实例指定创建对象的种类,并且通过拷贝这些原型创建新的对象
原型模式是用场景:需要大量的基于某个基础原型进行微量修改而得到新原型时使用
"""
from copy import copy, deepcopy
# 原型抽象类
class Prototype(object):
  def clone(self):
    pass
  def deep_clone(self):
    pass
# 工作经历类
class WorkExperience(object):
  def __init__(self):
    self.timearea = ''
    self.company = ''
  def set_workexperience(self,timearea, company):
    self.timearea = timearea
    self.company = company
# 简历类  
class Resume(Prototype):
  def __init__(self,name):
    self.name = name
    self.workexperience = WorkExperience()
  def set_personinfo(self,sex,age):
    self.sex = sex
    self.age = age
    pass
  def set_workexperience(self,timearea, company):
    self.workexperience.set_workexperience(timearea, company)
  def display(self):
    print self.name
    print self.sex, self.age
    print '工作经历',self.workexperience.timearea, self.workexperience.company
  def clone(self):
    return copy(self)
  def deep_clone(self):
    return deepcopy(self)
if __name__ == '__main__':
  obj1 = Resume('andy')
  obj2 = obj1.clone() # 浅拷贝对象
  obj3 = obj1.deep_clone() # 深拷贝对象
  obj1.set_personinfo('男',28)
  obj1.set_workexperience('2010-2015','AA')
  obj2.set_personinfo('男',27)
  obj2.set_workexperience('2011-2017','AA') # 修改浅拷贝的对象工作经历
  obj3.set_personinfo('男',29)
  obj3.set_workexperience('2016-2017','AA') # 修改深拷贝的对象的工作经历
  obj1.display()
  obj2.display()
  obj3.display()