[Python-Dev] PEP 492: async/await in Python; version 5 (original) (raw)

Paul Moore p.f.moore at gmail.com
Tue May 5 23:01:12 CEST 2015

On 5 May 2015 at 21:00, Yury Selivanov <yselivanov.ml at gmail.com> wrote:

On 2015-05-05 3:40 PM, Jim J. Jewett wrote:

On Tue May 5 18:29:44 CEST 2015, Yury Selivanov posted an updated PEP492. Where are the following over-simplifications wrong? (1) The PEP is intended for use (almost exclusively) with asychronous IO and a scheduler such as the asynchio event loop. Yes. You can also use it for UI loops. Basically, anything that can call your code asynchronously.

Given that the stdlib doesn't provide an example of such a UI loop, what would a 3rd party module need to implement to provide such a thing? Can any of the non-IO related parts of asyncio be reused for the purpose, or must the 3rd party module implement everything from scratch?

To me, this is an important question, as it cuts directly to the heart of the impression people have that coroutines and async are "only for asyncio".

I'd be interested in writing, for instructional purposes, a toy but complete event loop. But I'm not really interested in trying to reverse engineer the required interface.

Paul

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