python中，類屬性為只讀屬性

• 2020 年 1 月 7 日
• 筆記

class Computer:      """電腦"""      # __slots__ = ('_name', 'mem', 'cpu')      def __init__(self, name, mem, cpu):          self._name = name          self.mem = mem          self.cpu = cpu        @property      def name(self): # 只讀， getter方法          return self._name        def play(self, game='qq遊戲'):          print('play', game)  pc2 = Computer('admin', '8G', 8)

pc2.name   # name()函數變成屬性了，

'admin'

pc2.name = 1  # 不能修改屬性

---------------------------------------------------------------------------    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，不能調用name()函數了

---------------------------------------------------------------------------    TypeError                                 Traceback (most recent call last)    <ipython-input-34-e97dcaa201d9> in <module>()  ----> 1 pc2.name()    TypeError: 'str' object is not callable