Python 2 multiprocessing

from multiprocessing import Process, Queue

def do_sum(q,l):
    res = 0
    for i in range(10000):
        res += sum(l)
    q.put(res)

def main():
    my_list = range(1000000)
    cores = 8

    n = len(my_list) / cores
    chunks = (my_list[i:i+n] for i in xrange(0, len(my_list), n))

    q = Queue()
    ps = [Process(target=do_sum, args=(q, chunk))
          for chunk in chunks]
    print len(ps)
    for p in ps:
        p.start()
    print sum(q.get() for p in ps)


if __name__=='__main__':
    main()