Message 228745 - Python tracker

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Author	yselivanov
Recipients	gvanrossum, r.david.murray, vstinner, yselivanov
Date	2014-10-06.23:23:13
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1412637793.32.0.146825727905.issue22572@psf.upfronthosting.co.za>
In-reply-to

Content
I think that the main problem is that '_stop_server' is called from a main thread (by unittest machinery via addCleanup), whereas the loop is in the other thread. asyncio code is not thread-safe in general. If I change your code slightly to avoid using addCleanup, then everything works: https://gist.github.com/1st1/8dd0a2d4aa1ffd895c52 FWIW I couldn't reproduce the "NoneType object is not iterable" error. On my machine with python3.4.1 it crashes with another error "AssertionError: server did not stop" on line 35.

I think that the main problem is that '_stop_server' is called from a main thread (by unittest machinery via addCleanup), whereas the loop is in the other thread. asyncio code is not thread-safe in general.

If I change your code slightly to avoid using addCleanup, then everything works: https://gist.github.com/1st1/8dd0a2d4aa1ffd895c52

FWIW I couldn't reproduce the "NoneType object is not iterable" error. On my machine with python3.4.1 it crashes with another error "AssertionError: server did not stop" on line 35.

History
Date	User	Action	Args
2014-10-06 23:23:13	yselivanov	set	recipients: + yselivanov, gvanrossum, vstinner, r.david.murray
2014-10-06 23:23:13	yselivanov	set	messageid: <1412637793.32.0.146825727905.issue22572@psf.upfronthosting.co.za>
2014-10-06 23:23:13	yselivanov	link	issue22572 messages
2014-10-06 23:23:13	yselivanov	create