New submission from Nick Davies :
This problem was identified in https://bugs.python.org/issue34970 but I think
the fix might have been incorrect. The theory in issue34970 was that GC was
causing the weakrefset for `all_tasks` to change during iteration. However
Weakset provides an
Change by Nick Davies :
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type: -> behavior
versions: +Python 3.6
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Python tracker
<https://bugs.python.org/issue36607>
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Python-bugs-list mai
Nick Davies added the comment:
My preference would actually be number 3 because:
1: I agree that this isn't really a safe option because it could slow things
down (possibly a lot)
2: I haven't found this to be rare in my situation but I am not sure how
common my setup is.
Nick Davies added the comment:
> Would you prepare a patch for number 3?
I will give it a try and see what I come up with.
> I am afraid we can add another hard-to-debug multi-threaded problem by
> complicating the data structure.
Yeah this was my concern too, the adding and remo
