Gustavo J. A. M. Carneiro added the comment: > - Are there other places where a cancellation can have a similar effect? > Maybe the same logic in put()?
Hm.. I didn't look, but yes, it does look like it might be affected by the same issue. I'll try to create a test for that to confirm. > how can the yield-from in get() receive a CancelledError without the waiter > being cancelled? Well, it definitely gets a CancelledError in the return (yield from waiter). I added extensive logging and could confirm this is the case. What happens is that 1. Test creates a task q.get() 2. The task coroutine, inside Queue.get, blocks on the yield from waiter 3. a couple of items are put in the queue 4. Test code calls task.cancel() (where `task` is running the coroutine q.get) 5. The Queue.get task receives a CancelledError because it was cancelled. The exception appears to come from the `yield from waiter` only because this is the place where the Queue.get task was suspended, but waiter itself is not cancelled. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue23812> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
