Submit code for execution to all processes in a concurrent.futures.ProcessPool

Context:

• A Python application server that uses a concurrent.futures.process.ProcessPool to execute code
• We sometimes want to hot reload imported code without restarting the entire server process

(yes I know importlib.reload has caveats)

To get this to work I imagine I would have to execute the importlib.reload in every multiprocessing process that is managed by the process pool.

Is there a way to submit something to all processes in a process pool?

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