class Point:
    def __init__(self, x=10):
        self.setx(x)
    def setx(self, x=0):
        self.x = x
    def getx(self):
        return self.x
    def delx(self):
        del self.x
    x = property(getx, setx, delx, "I'm the 'x' property.")


q = Point()
q.x += 10
q.get()