Path: csiph.com!eternal-september.org!feeder.eternal-september.org!mx02.eternal-september.org!.POSTED!not-for-mail
From: Paul Rubin <no.email@nospam.invalid>
Newsgroups: comp.lang.python
Subject: Re: asyncio - run coroutine in the background
Date: Wed, 17 Feb 2016 20:38:14 -0800
Organization: A noiseless patient Spider
Lines: 8
Message-ID: <87vb5m7hvt.fsf@jester.gateway.pace.com>
References: <mailman.131.1455518141.22075.python-list@python.org> <8737sumpjl.fsf@elektro.pacujo.net> <mailman.132.1455520607.22075.python-list@python.org> <87h9ha8lt0.fsf@jester.gateway.pace.com> <CAPTjJmoWUDfcOe3OCaMK7=zDtW3QzS+7hqUG6DoYZ2AbqzJBUw@mail.gmail.com> <mailman.166.1455628969.22075.python-list@python.org> <87d1rwpwo2.fsf@elektro.pacujo.net> <56c33d7e$0$1587$c3e8da3$5496439d@news.astraweb.com> <87vb5ok2ab.fsf@elektro.pacujo.net>
Mime-Version: 1.0
Content-Type: text/plain
Injection-Info: mx02.eternal-september.org; posting-host="560a36ee31cc4bcf69e115b311f0cc5c"; logging-data="21362"; mail-complaints-to="abuse@eternal-september.org";	posting-account="U2FsdGVkX1/0d1k2rT8yMHaUo22qwYwp"
User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3 (gnu/linux)
Cancel-Lock: sha1:zmRRoLWtKMDwQD1wlNOYcm2iZiQ= sha1:fZHqEzy0VO0zKbFl99ma6yGDcBU=
Xref: csiph.com comp.lang.python:103082

Marko Rauhamaa <marko@pacujo.net> writes:
> @asyncio.coroutine
> def background_task(): ...
>     while time.time() - t < 10:
>         pass

Wait, that's a cpu-busy loop, you can't do that in cooperative
multitasking.  Of course you need a wait there.