ForkMe

Fork your proccess like a boss

import forkme
import logging
import os
from time import sleep


logging.basicConfig(level=logging.DEBUG)


def main():
    print("Master proccess has PID: {0}".format(os.getpid()))
    forkme.fork(4)
    print(
        "Proceess #{id} has PID: {pid}".format(
            id=forkme.get_id(),
            pid=os.getpid()
        )
    )
    sleep(1)


if __name__ == '__main__':
    main()

This code makes 4 forks. When you try to run it you will see something like this

Master proccess has PID: 7437
INFO:forkme:Starting 4 processes
Proceess #2 has PID: 7440
Proceess #1 has PID: 7439
Proceess #3 has PID: 7441
Proceess #0 has PID: 7438
INFO:forkme:Child with PID: 7439 Number: 1 exited normally
INFO:forkme:Child with PID: 7441 Number: 3 exited normally
INFO:forkme:Child with PID: 7440 Number: 2 exited normally
INFO:forkme:Child with PID: 7438 Number: 0 exited normally

Forkme will be control forks. When subprocess will be killed or will exit with non-zero code it will be restarted immediately. e.g.:

Master proccess has PID: 7579
INFO:forkme:Starting 4 processes
Proceess #0 has PID: 7580
Proceess #1 has PID: 7581
Proceess #2 has PID: 7582
Proceess #3 has PID: 7583
WARNING:forkme:Child with PID: 7580 Number: 0 killed by signal 9, restarting
Proceess #0 has PID: 7584
INFO:forkme:Child with PID: 7581 Number: 1 exited normally
INFO:forkme:Child with PID: 7582 Number: 2 exited normally
INFO:forkme:Child with PID: 7583 Number: 3 exited normally
INFO:forkme:Child with PID: 7584 Number: 0 exited normally