python中,类属性为只读属性

发布时间:2019-09-08 09:13:06编辑:auto阅读(1476)

    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

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