python3设计模式之简单工厂模式
发布时间:2020-12-17 08:00:49 所属栏目:Python 来源:网络整理
导读:在Python3环境下,调试实现了《大话设计模式》中简单工厂模式,通过定义单独的工厂类,完成对具体的产品的实例化,参考链接 具体实现见代码: #!/usr/bin/env python# -*- coding: utf-8 -*-# Date : 2017-10-15 21:46:28# Author : John# Version : V1.001#
在Python3环境下,调试实现了《大话设计模式》中简单工厂模式,通过定义单独的工厂类,完成对具体的产品的实例化,参考链接 具体实现见代码: #!/usr/bin/env python # -*- coding: utf-8 -*- # Date : 2017-10-15 21:46:28 # Author : John # Version : V1.001 # Func : class Operator(object): """docstring for Operator""" def __init__(self,NumberA=0,NumberB=0): super(Operator,self).__init__() self.NumberA = NumberA self.NumberB = NumberB def GetResult(self): pass class AddOp(Operator): """docstring for AddOp""" def GetResult(self): return int(float(self.NumberA) + float(self.NumberB)) class MinusOp(Operator): """docstring for MinusOp""" def GetResult(self): return int(float(self.NumberA) - float(self.NumberB)) class MultiOp(Operator): """docstring for MultiOp""" def GetResult(self): return int(float(self.NumberA) * float(self.NumberB)) class DivideOp(Operator): """docstring for DivideOp""" def GetResult(self): try: return float(float(self.NumberA) / float(self.NumberB) * 1.0) except ZeroDivisionError as e: print("DivideOp error,{0}".format(e)) class OperatorFactory(object): """docstring for OperatorFactory""" def ChooSEOperator(self,op): if op == '+': return AddOp() if op == '-': return MinusOp() if op == '*': return MultiOp() if op == '/': return DivideOp() if __name__ == '__main__': ch = '' while not ch == 'q': NumberA = input('Please input NumberA: ') op = input('Please input operator: ') NumberB = input('Please input NumberB: ') factory = OperatorFactory() opType = factory.ChooSEOperator(op) opType.NumberA = NumberA opType.NumberB = NumberB print('The result is: {0}'.format(opType.GetResult())) print('n#-- input q to exit any key to continue') try: ch = str(input()) except Exception as e: print('Get input error: {0}'.format(e)) print('Use default value to ch') ch = '' 以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持编程小技巧。 (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |
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