[issue43498] "dictionary changed size during iteration" error in _ExecutorManagerThread

[Dennis Sweeney]

Dennis Sweeney <sweeney.dennis650 at gmail.com> added the comment:

It was mentioned in bpo-40327 that although copy() makes the situation much better, it doesn't solve the problem entirely, since the memory allocation of the copy() call can release the GIL. I don't know enough to know whether it would be worth it to add locking.

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nosy: +Dennis Sweeney

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