basic multiprocessing with python 3.6. workers can be stopped externally via events.

mp-events-demo.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

import multiprocessing as mp
from time import sleep


def task(exit_evt, id):
    while not exit_evt.is_set():
        pass
    print("Worker %s exiting" % id)


def main():
    events = []
    processes = []
    for i in range(2):
        exit_event = mp.Event()
        events.append(exit_event)
        worker_args = [exit_event, i]
        processes.append(mp.Process(target=task, args=worker_args))
    sleep(1)
    [p.start() for p in processes]
    for evt in events:
        sleep(1)
        evt.set()
    [p.join() for p in processes]


if __name__ == "__main__":
    main()