[Python-Dev] Concerns about method overriding and subclassing with dataclasses

Ethan Smith ethan at ethanhs.me
Fri Dec 29 19:52:31 EST 2017


attrs just silently overwrites any user provided __repr__ unless you
provide repr=False to attr.s.

I think we can all agree that if nothing else, silently overwriting
unconditionally is not what we want for dataclasses.

On Fri, Dec 29, 2017 at 4:38 PM, Nathaniel Smith <njs at pobox.com> wrote:

> On Fri, Dec 29, 2017 at 12:30 PM, Ethan Furman <ethan at stoneleaf.us> wrote:
> > Good point.  So auto-generate a new __repr__ if:
> >
> > - one is not provided, and
> > - existing __repr__ is either:
> >   - object.__repr__, or
> >   - a previous dataclass __repr__
> >
> > And if the auto default doesn't work for one's use-case, use the keyword
> > parameter to specify what you want.
>
> What does attrs do here?
>
> -n
>
> --
> Nathaniel J. Smith -- https://vorpus.org
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