這篇文章主要為大家詳細介紹了python3設計模式之簡單工廠模式,具有一定的參考價值,感興趣的小伙伴們可以參考一下
在Python3環境下,調試實現了《大話設計模式》中簡單工廠模式,透過定義單獨的工廠類,完成對具體的產品的實例化,參考鏈接
具體實現見代碼:
##
#!/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 pideOp(Operator): """docstring for pideOp""" def GetResult(self): try: return float(float(self.NumberA) / float(self.NumberB) * 1.0) except ZeropisionError as e: print("pideOp 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 pideOp() 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 = ''
以上是python3之簡單工廠模式的介紹的詳細內容。更多資訊請關注PHP中文網其他相關文章!

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