The RC for 3.5.2 is going out coming weekend (see PEP 478 <https://www.python.org/dev/peps/pep-0478/>). We should get this out now, or make it the first incompatibility in 3.6 (that's also an option; 3.6 feature freeze starts September, see PEP 494 <https://www.python.org/dev/peps/pep-0494/>). On Mon, Jun 6, 2016 at 1:05 PM, Yury Selivanov <yselivanov.ml at gmail.com> wrote: > > > On 2016-06-06 4:02 PM, Łukasz Langa wrote: > >> The proposed patch fixes the __aiter__ in a backwards compatible way: >>> >>> 1. ceval/GET_AITER opcode calls the __aiter__ method. >>> >>> 2. If the returned object has an '__anext__' method, GET_AITER silently >>> wraps it in an awaitable, which is equivalent to the following coroutine: >>> >>> async def wrapper(aiter_result): >>> return aiter_result >>> >>> 3. If the returned object does not have an '__anext__' method, a >>> DeprecationWarning is raised. >>> >> >> There’s a problem with this approach. It will force people to write >> deprecated code because you never know if your library is going to run on >> 3.5.0 or 3.5.1. Barry, Ubuntu wily, xenial and yakkety currently package >> 3.5.0 or 3.5.1. When 3.5.2 is going to get released, are they going to get >> it? I’m pretty sure wily *isn’t* and yakkety *is* but just wanted to >> confirm; especially with xenial being an LTS release. >> >> > Yes, I agree. OTOH, I don't see any other way of resolving this. > > Another option would be to start raising the DeprecationWarning only in > 3.6. > > Yury > > _______________________________________________ > Python-Dev mailing list > Python-Dev at python.org > https://mail.python.org/mailman/listinfo/python-dev > Unsubscribe: > https://mail.python.org/mailman/options/python-dev/guido%40python.org > -- --Guido van Rossum (python.org/~guido) -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mail.python.org/pipermail/python-dev/attachments/20160606/e9908a95/attachment.html>
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