On Tue, Feb 19, 2019 at 12:10 PM Andrew Svetlov <andrew.svetlov@gmail.com> wrote:
If the task's function swallows CancelledError exception -- it is a programming error.
I was asking if there is a way to end such a task. Is there? The only approach I can think of without having something like set_exception() is to keep calling cancel() in a loop and waiting (but even that can fail under certain code), but I'm not sure off-hand if the API supports calling cancel() more than once. Also, I can see this happening even when there is no bug. Maybe the coroutine was properly written to cancel gracefully, but the caller doesn't want to continue waiting past a certain time. --Chris
The same as generator object technically can swallow GeneratorExit (but such code is most likely buggy).
On Tue, Feb 19, 2019 at 9:55 PM Chris Jerdonek <chris.jerdonek@gmail.com> wrote:
I have an asyncio question.
In Python 3.7, is there a way to reliably end a task after having already tried calling cancel() on it and waiting for it to end?
In Python 3.6, I did this with task.set_exception(), but in 3.7 that method was removed.
--Chris _______________________________________________ Async-sig mailing list Async-sig@python.org https://mail.python.org/mailman/listinfo/async-sig Code of Conduct: https://www.python.org/psf/codeofconduct/
-- Thanks, Andrew Svetlov