Python学习笔记（十八）@property

# 请利用@property给一个Screen对象加上width和height属性，
# 以及一个只读属性resolution：

# -*- coding: utf-8 -*-
class Screen(object):
    @property
    def width(self):
        return self._width

    @width.setter
    def width(self, value):
        self._width = value

    @property
    def height(self):
        return self._height

    @height.setter
    def height(self, value):
        self._height = value

    @property
    def resolution(self):
        return self._width + self._height


s = Screen()
s.width = 1024
s.height = 768

print(s.resolution)
assert s.resolution == 786432, ‘1024 * 768 = %d ?‘ % s.resolution