原型模式ProtoType

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# @Time    : 2019/3/4 21:49
# @Author  : ChenAdong
# @email   : aiswell@foxmail.com

import copy

class ProtoType:
	def __init__(self):
		self._object = {}

	def register_object(self, name, obj):
		self._object[name] = obj

	def unregister_object(self, name):
		del self._object[name]

	def clone(self, name, **attr):
		_obj = copy.deepcopy(self._object.get(name))
		print(_obj)
		_obj.__dict__.update(attr)
		return _obj

if __name__ == "__main__":
	class Test:
		pass

	t = Test()
	prototype = ProtoType()
	prototype.register_object("c", t)
	t1 = prototype.clone("c", attr_1=1)
	print(t1.attr_1)

<__main__.Test object at 0x000002340CDF2630>
1