Python Property属性【python风格】

1. 方法1

class C1:
    def __init__(self):
        self._x = None

    def getx(self):
        print('getx')
        return self._x

    def setx(self, value):
        print('setx')
        self._x = value

    def delx(self):
        print('delx')
        del self._x

    x = property(getx, setx, delx, "I'm the 'x' property.")


c = C1()
c.x =1
print(c.x)
c.y =2
print(c.y)

2. 方法2

class C2(object):
    def __init__(self):
        self._x = None

    @property
    def x(self):
        """I'm the 'x' property."""
        print("getter of x called")
        return self._x   # 注意这里是return

    @x.setter
    def x(self, value):
        print("setter of x called")
        self._x = value

    @x.deleter
    def x(self):
        print("deleter of x called")
        del self._x

c2 = C2()
c2.x=1
print(c2.x)
c2.y=2
print(c2.y)