python中，类属性为只读属性

class Computer:
    """电脑"""
    # __slots__ = ('_name', 'mem', 'cpu')
    def __init__(self, name, mem, cpu):
        self._name = name
        self.mem = mem
        self.cpu = cpu

    @property
    def name(self): # 只读， getter方法
        return self._name

    def play(self, game='qq游戏'):
        print('play', game)
pc2 = Computer('admin', '8G', 8)

pc2.name   # name()函数变成属性了，

'admin'

pc2.name = 1  # 不能修改属性

---------------------------------------------------------------------------

AttributeError                            Traceback (most recent call last)

<ipython-input-33-91d30e8bb3c6> in <module>()
----> 1 pc2.name = 1

AttributeError: can't set attribute

pc2.name()  # 加了@property，不能调用name()函数了

---------------------------------------------------------------------------

TypeError                                 Traceback (most recent call last)

<iPython-input-34-e97dcaa201d9> in <module>()
----> 1 pc2.name()

TypeError: 'str' object is not callable