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    • python 设计模式一
    Experiences and Insight 865 views · 5 replies ·
    Tofloor
    poster avatar
    z85525006
    deepin
    2012-06-02 18:55
    Author
    由于找了很久,都找不到关于python的设计模式的相关书籍,就连算法和数据结构也是,
    所以就将C#的设计模式转换过来.

    这个例子是写了一个简单的例子,计算器.
    2. # coding:utf-8
    3. # 计算器
    4. # 暴风
    5. # 邮箱: [email protected]
    7. class Operation(object):
    8.     def __init__(self):
    9.         self.__numberA = 0.0
    10.         self.__numberB = 0.0
    11.     # NumberA.   
    12.     @property   
    13.     def NumberA(self):
    14.         return self.__numberA
    15.         
    16.     @NumberA.setter
    17.     def NumberA(self, value):
    18.         self.__numberA = value
    19.         
    20.     @NumberA.getter   
    21.     def NumberA(self):
    22.         return self.__numberA
    23.    
    24.     @NumberA.deleter
    25.     def NumberA(self):
    26.         del self.__numberA
    27.         
    28.     # NumberB   
    29.     @property   
    30.     def NumberB(self):
    31.         return self.__numberB
    32.         
    33.     @NumberB.setter
    34.     def NumberB(self, value):
    35.         self.__numberB = value
    36.         
    37.     @NumberB.getter   
    38.     def NumberB(self):
    39.         return self.__numberB
    40.    
    41.     @NumberB.deleter
    42.     def NumberB(self):
    43.         del self.__numberB
    44.          
    45.         
    46. class Add(Operation):   
    47.     def __init__(self):
    48.         Operation.__init__(self)
    49.         
    50.     def GetResult(self):
    51.         result = 0.0
    52.         result = self.NumberA + self.NumberB
    53.         return result
    54.         
    55.             
    56. if __name__ == "__main__":        
    57.     add = Add()
    58.     add.NumberA = 30
    59.     add.NumberB = 60
    60.     print add.GetResult()   
    Copy the Code

    简单的工厂模式.有不好的地方还请大家多多指教.
    2. # coding:utf-8
    3. # 计算器
    4. # 暴风
    5. # 邮箱: [email protected]
    7. class Operation(object):
    8.     def __init__(self):
    9.         self.__numberA = 0.0
    10.         self.__numberB = 0.0
    11.     # NumberA.   
    12.     @property   
    13.     def NumberA(self):
    14.         return self.__numberA
    15.         
    16.     @NumberA.setter
    17.     def NumberA(self, value):
    18.         self.__numberA = value
    19.         
    20.     @NumberA.getter   
    21.     def NumberA(self):
    22.         return self.__numberA
    23.    
    24.     @NumberA.deleter
    25.     def NumberA(self):
    26.         del self.__numberA
    27.         
    28.     # NumberB   
    29.     @property   
    30.     def NumberB(self):
    31.         return self.__numberB
    32.         
    33.     @NumberB.setter
    34.     def NumberB(self, value):
    35.         self.__numberB = value
    36.         
    37.     @NumberB.getter   
    38.     def NumberB(self):
    39.         return self.__numberB
    40.    
    41.     @NumberB.deleter
    42.     def NumberB(self):
    43.         del self.__numberB
    44.          
    45.         
    46. class Add(Operation):   
    47.     def __init__(self):
    48.         Operation.__init__(self)
    49.         
    50.     def GetResult(self):
    51.         result = 0.0
    52.         result = self.NumberA + self.NumberB
    53.         return result
    54.         
    55. class Sub(Operation):   
    56.     def __init__(self):
    57.         Operation.__init__(self)
    58.         
    59.     def GetResult(self):
    60.         result = 0.0
    61.         result = self.NumberA - self.NumberB
    62.         return result
    63. # 简单的工厂模式        
    64. class OperationFactory(object):            
    65.     def createOperate(self, operate):   
    66.         if "+" == operate:
    67.             return Add()
    68.         elif "-" == operate:   
    69.             return Sub()
    70.         # elif "*" == operate:
    71.         # elif "/" == operate:
    72.             
    73.             
    74. if __name__ == "__main__":        
    75.     operation = Operation()
    76.     operation = OperationFactory().createOperate("+")
    77.    
    78.     operation.NumberA = 30
    79.     operation.NumberB = 60
    80.     print operation.GetResult()   
    81.   
    82.     operation = OperationFactory().createOperate("-")
    83.     operation.NumberA = 30
    84.     operation.NumberB = 60
    85.     print operation.GetResult()
    86.    
    Copy the Code
    设计模式能让代码复用,更容易维护.现在我要修改加法类,或者增加其它 除法类,...都很方便,而不用改一大堆的代码.
    所以python上我也要好好的发挥设计模式的威力,只能下个月开始使用 设计模式啦.
    Reply Favorite View the author
    All Replies
    z85525006
    deepin
    2012-06-02 19:16
    #1
    下一节是  策策略模式, 简单的说就是对 算法的封装,
    算法只是一种策略.
    Reply View the author
    cxbii
    deepin
    2012-06-02 19:20
    #2
    嗯嗯，围观之力顶
    Reply View the author
    cnchanghai
    deepin
    2012-06-02 23:39
    #3
    不懂，看气势挺NB
    Reply View the author
    jhkwei
    deepin
    2012-06-04 03:10
    #4
    四人帮的书，看过，不过差不多都忘记了。。
    Reply View the author
    a287740928
    deepin
    2012-06-04 04:19
    #5
    不懂，非专业，只是略懂c++和vb，哈哈
    Reply View the author