python_multiprocessing_queue.py

from multiprocessing import Queue, Process
from time import sleep


def reader_proc(q):
    while True:
        name = q.get()
        print(name)
        sleep(2)
        if name == 'DONE':
            break


def writer_proc(name, q):
    q.put(name)


def main():
    names = ["Touhid", "Shadi", "Alie", "Amir"]
    procs = []
    q = Queue()
    for name in names:
        proc = Process(target=writer_proc, args=(name, q,))
        procs.append(proc)
        proc.start()

    proc = Process(target=writer_proc, args=("DONE", q,))
    procs.append(proc)
    proc.start()
    proc = Process(target=reader_proc, args=(q,))
    procs.append(proc)
    proc.start()

    print("Hi from main process")

    # complete the processes
    for proc in procs:
        proc.join()


if __name__ == "__main__":
    main()

from the official Python docs:

join() Wait for the worker processes to exit. One must call close() or terminate() before using join().

so maybe call it to free up some memory and avoid having zombies in your process list?