Return value from multiprocessing.Queue () in Python multiprocessing

Question

I am running a simple multiprocessor program (code below). I just make 2 processors and then initialize the queue to store the result.

I wonder why with the same name q, but each time it prints a different value. I know that return values ​​in queue storage 2 are from pro1and pro2. But I was expecting something like:

q = [1,2]

or

q=[2,1] #depend on which one runs first

I can not understand how one variable qcan be 1 or 2.

It bothers me so much. Thank.

The code:

import multiprocessing


def run(ID, q):
    print("Starting thread %s " % (ID))

    q.put(ID)
    return None

if __name__ == '__main__':
    q = multiprocessing.Queue()  #store the result
    pro1 = multiprocessing.Process(target=run, args=(1,q))
    pro2 = multiprocessing.Process(target=run, args=(2,q))

    pro1.start()
    pro2.start()

    pro1.join()
    pro2.join()

    print("q is ", q.get())
    print("another q is ", q.get())

Result:

Starting thread 2 
Starting thread 1 
('q is ', 1)
('another q is ', 2)

Answer 1

100% , , , , , , , , . . , .

, 1, 2.

,

[1,2]

, q.get(), 1, :

`[2]`

, q.get(), 2, .