Python中__slots__的禁用实例

class Test:
    __slots__ = ('a', 'b')
 
    def __init__(self, a, b):
        self.a = a
        self.b = b
>>> t = Test(1, 2)
>>> t.__dict__
AttributeError: 'Test' object has no attribute '__dict__'
>>> Test.__dict__
mappingproxy({'__module__': '__main__',
              '__slots__': ('a', 'b'),
              '__init__': <function __main__.Test.__init__(self, a, b)>,
              'a': <member 'a' of 'Test' objects>,
              'b': <member 'b' of 'Test' objects>,
              '__doc__': None})