[Python] How to catch the duration and return value of many python parallel sub-process

I need to write some code in python that launches 8 processes in parallel and that, for each process, is able to report their return value and their duration in microseconds.

Unfortunately I don't know how to do it.

I imagined launching the processes with:

p = subprocess.Popen([f"{my_process}"], shell=True, universal_newlines = True, stderr=subprocess.STDOUT, stdout=DEVNULL)


and waiting for their termination with:

p.wait()


measuring their start and stop time with:

datetime.now()


but what I don't know how to do is capture the durations of each process in parallel, also taking the return value of each.

Do you think this task is too difficult for python? I guess not, but I can't get out of it!

Can someone help me please?

Thanks

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