Message 256539 - Python tracker

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In-reply-to
Author	yselivanov
Recipients	asvetlov, gvanrossum, ncoghlan, vstinner, yselivanov
Date	2015年12月16日.21:51:12
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1450302672.61.0.939075659371.issue25888@psf.upfronthosting.co.za>

Content
This problem was discussed in one of the asyncio issues here: https://github.com/python/asyncio/issues/288 I propose to raise a RuntimeError if an 'await' expression is used for a coroutine object that's being awaited on already. This change shouldn't impact performance in any way. It will prevent users from writing code that behaves in a very weird ways (see the github link for an example).

Content

This problem was discussed in one of the asyncio issues here: https://github.com/python/asyncio/issues/288
I propose to raise a RuntimeError if an 'await' expression is used for a coroutine object that's being awaited on already. This change shouldn't impact performance in any way. It will prevent users from writing code that behaves in a very weird ways (see the github link for an example).

History
Date	User	Action	Args
2015年12月16日 21:51:12	yselivanov	set	recipients: + yselivanov, gvanrossum, ncoghlan, vstinner, asvetlov
2015年12月16日 21:51:12	yselivanov	set	messageid: <1450302672.61.0.939075659371.issue25888@psf.upfronthosting.co.za>
2015年12月16日 21:51:12	yselivanov	link	issue25888 messages
2015年12月16日 21:51:12	yselivanov	create

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