The "devel" documentation of the "Multiprocessing" module at the
"Exchanging objects between processes" section has the following example
snippet:

from multiprocessing import Process, Queue

def f(q):
    q.put([42, None, 'hello'])

 if __name__ == '__main__':
     q = Queue()
     p = Process(target=f, args=(q,))
     p.start()
     print q.get()    # prints "[42, None, 'hello']"
     p.join()

The last two lines should be swapped to avoid a race condition:

     p.join()
     print q.get()    # prints "[42, None, 'hello']"

BTW, Nice work. Keep on going folks =)

Why? The q.get() will block until an item is put on it.

Ups. My mistake. Sorry