Experimenting using multiprocessign and signals in python.

esperiment.py

import time 
import multiprocessing
import signal

from multiprocessing import Event

class W(multiprocessing.Process):

    def __init__(self, i: int, event: Event) -> None:
        super().__init__()
        self.i = i
        self.event = event
    
    def run(self) -> None:
        while not self.event.is_set():
            print(self.i, 'working...')
            time.sleep(1)

        print(self.i, 'completed')


if __name__ == '__main__':

    event = Event()

    def main_signal_handler(signum, frame):
        if not event.is_set():
            print('setting event')
            event.set()

    signal.signal(signal.SIGINT, main_signal_handler)
    signal.signal(signal.SIGTERM, main_signal_handler)

    workers = [W(w, event) for w in range(3)]

    for w in workers:
        w.start()