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import multiprocessing as mp


def iqueue(queue):
    while not queue.empty():
        yield queue.get()


def combine_with_queue(queue):
    def f(data):
        x = data[0] * data[1]
        queue.put(x)
    return f


data_set = ((5, 1), (5, 2), (5, 3))

# The Manager instance seems to handle the queue better, in testing.
q = mp.Manager().Queue()
f = combine_with_queue(q)

p = mp.Pool(4)
p.map(f, data_set)
p.close()
p.join()

for i in iqueue(q):
    print i