On Sun, 10 Dec 2017 20:47:45 +0100 Antoine Pitrou <solip...@pitrou.net> wrote:
> Hi, > > On Sun, 10 Dec 2017 19:17:25 +0000 > Tin Tvrtković <tinches...@gmail.com> wrote: > > Hello, > > > > I'm one of the attrs contributors, and the person who initially wrote the > > slots functionality there. > > > > We've given up on returning a new class always since this can conflict with > > certain metaclasses (have you noticed you can't make a slots attrs class > > inheriting from Generic[T]?) and with PEP 487. I think with PEP 487 it's > > becoming especially evident class creation is not necessarily an idempotent > > operation. > > Hmm... I understand you may be restricted by backwards compatibility > here. But dataclasses don't have that issue, so we could decide we're > incompatible with certain dataclasses from day 1. Sorry... make that "incompatible with certain metaclasses" ;-) Regards Antoine. _______________________________________________ Python-Dev mailing list Python-Dev@python.org https://mail.python.org/mailman/listinfo/python-dev Unsubscribe: https://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
