One more thing. I would really appreciate it if you properly wrapped lines in your PEP around column 72 instead of using a single line per paragraph. This is the standard convention, see the template in PEP 12.
On Sun, Oct 1, 2017 at 8:42 PM, Guido van Rossum <gu...@python.org> wrote: > On Sun, Oct 1, 2017 at 1:52 PM, Koos Zevenhoven <k7ho...@gmail.com> wrote: > >> On Oct 1, 2017 19:26, "Guido van Rossum" <gu...@python.org> wrote: >> >> Your PEP is currently incomplete. If you don't finish it, it is not even >> a contender. But TBH it's not my favorite anyway, so you could also just >> withdraw it. >> >> >> I can withdraw it if you ask me to, but I don't want to withdraw it >> without any reason. I haven't changed my mind about the big picture. OTOH, >> PEP 521 is elegant and could be used to implement PEP 555, but 521 is >> almost certainly less performant and has some problems regarding context >> manager wrappers that use composition instead of inheritance. >> > > It is my understanding that PEP 521 (which proposes to add optional > __suspend__ and __resume__ methods to the context manager protocol, to be > called whenever a frame is suspended or resumed inside a `with` block) is > no longer a contender because it would be way too slow. I haven't read it > recently or thought about it, so I don't know what the second issue you > mention is about (though it's presumably about the `yield` in a context > manager implemented using a generator decorated with > `@contextlib.contextmanager`). > > So it's really between PEP 550 and PEP 555. And there are currently too > many parts of PEP 555 that are left to the imagination of the reader. So, > again, I ask you to put up or shut up. It's your choice. If you don't want > to do the work completing the PEP you might as well withdraw (once I am > satisfied with Yury's PEP I will just accept it when there's no contender). > If you do complete it I will probably still choose PEP 550 -- but at the > moment the choice would be between something I understand completely and > something that's too poorly specified to be able to reason about it. > > --Guido > > >> -- Koos >> >> >> >> On Oct 1, 2017 9:13 AM, "Koos Zevenhoven" <k7ho...@gmail.com> wrote: >> >>> On Sep 29, 2017 18:21, "Guido van Rossum" <gu...@python.org> wrote: >>> >>> >>> PS. PEP 550 is still unaccepted, awaiting a new revision from Yury and >>> Elvis. >>> >>> >>> This is getting really off-topic, but I do have updates to add to PEP >>> 555 if there is interest in that. IMO, 555 is better and most likely faster >>> than 550, but on the other hand, the issues with PEP 550 are most likely >>> not going to be a problem for me personally. >>> >>> -- Koos >>> >> >> > > > -- > --Guido van Rossum (python.org/~guido) > -- --Guido van Rossum (python.org/~guido)
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