Nathaniel Smith <n...@pobox.com> added the comment:

It might be possible to create ProcessPoolExecutor and get it to spawn all the 
workers *before* you start the asyncio loop. It looks like ProcessPoolExecutor 
delays spawning workers until the first piece of work is submitted, but at that 
point it spawns all of them immediately, so something like this might work:

executor = ProcessPoolExecutor(...)
executor.submit(lambda: None).wait()
with asyncio.get_event_loop() as loop:
    loop.run_until_complete(...)

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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue31489>
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