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我制作了一个基本的只读描述符:

class ReadOnlyDescriptor:
    def __init__(self):
        pass
    def __get__(self, obj, objtype=None):
        return obj._something
    def __set__(self, obj, value):
        raise AttributeError("Cannot set this!")
    def __delete__(self, obj):
        raise AttributeError("Cannot delete this!")


class Object:
     something = ReadOnlyDescriptor()
     def __init__(self, something='abc'):
         self._something=something

它适用于一个基本示例:

>>> a=Object()
>>> a.something
'abc'
>>> a.something='asdf'
AttributeError: Cannot update this!
>>> del a.something
AttributeError: Cannot delete this!

有没有办法使上述更通用?例如,而不是必须调用它obj._something__get__动态调用它?换句话说(除了使用装饰器),执行上述操作的更通用方法是什么?

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