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55 lines (42 loc) · 1.27 KB
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#!/usr/bin/env python
# -*- encoding: utf-8 -*-
"""
Topic: Builder模式
Desc :
在Builder模式中，有如下3个角色：
1，Product产品类
通常是实现了模板方法模式，也就是有模板方法和基本方法
2，Builder类
可随时返回一个组建好的产品对象
3，Director导演类
负责安排已有模块的顺序，然后告诉Builder怎样建造产品对象
"""
class Product:
def do_something(self):
print('do_something')
def do_otherthing(self):
print('do_otherthing')
class Builder:
def __init__(self, product):
self.product = product
def build_something(self):
self.product.do_something()
def build_otherthing(self):
self.product.do_otherthing()
def build_product(self):
return self.product
class Director:
def __init__(self):
self.builder = Builder(Product())
def get_product_a(self):
self.builder.build_something()
return self.builder.build_product()
def get_product_b(self):
self.builder.build_something()
self.builder.build_otherthing()
return self.builder.build_product()
if __name__ == '__main__':
director = Director()
director.get_product_a()
print('-----------------')
director.get_product_b()