Python property

 

闲来无事，早就听说Python很优雅，来把玩一番，直接上代码撒

 

#===============================================================================
# @author: Cody
# @date: 2013-05-09
#===============================================================================


'''
    property 完成了类似java中getter,setter的功能，甚至还包括了del属性的功能，具体使用方法两种
    如下面的例子所示
'''

class Cody:
    def __init__(self):
        self._x = None
        
    def getX(self):
        return self._x
    
    def setX(self,x):
        self._x = x
        
    def delX(self):
        del self._x
        
    x = property(getX,setX,delX,"test Property ")


class Tom:
    def __init__(self,y = 0):
        self._y = y

    @property
    def y(self):
        return self._y
    
    @y.setter
    def y(self,y):
        self._y = y
    
    @y.deleter
    def y(self):
        del self._y
    
if __name__ == "__main__":
    cody = Cody()
    cody.x = 10;
    
    print(cody.x)
    del cody.x
    print(cody.x)   # AttributeError: 'Cody' object has no attribute '_x'