Eric V. Smith <e...@trueblade.com> added the comment:

@property has a place to attach the docstring, dataclasses in general do not. I 
wouldn't want to add a descriptor just to have the ability to add a docstring. 
There are performance issues involved, and I'm sure some corner cases where 
functionality would change.

Maybe if you bring this up on python-ideas you can get some more ideas.

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<https://bugs.python.org/issue42414>
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