Answer by martineau for Trying to use multiprocessing queue but unable to get the desired results

The while loop you have in your code is wrong because you don't want the function_to_get_from_q() process to quit everytime it checks the queue and it's empty. In the code below, a special value is put() into the queue to indicate that it's the last one.

import multiprocessing as mpimport datetime as dtSENTINEL = 'stop'def function_to_get_from_q(queue):    while (value := queue.get()) != SENTINEL:        print(value)def collect(queue):    for i in range(10000):        t = dt.datetime.utcnow() + dt.timedelta(hours=5, minutes=30)        queue.put([i, t.strftime('%H:%M:%S')])    queue.put(SENTINEL)  # Indicate end.if __name__ == "__main__":    queue = mp.Queue()    process1 = mp.Process(target=collect, args=(queue,))    process2 = mp.Process(target=function_to_get_from_q, args=(queue,))    process1.start()    process2.start()    print('fini')