Simple multiprocessing example

mulitprocessing.py

from multiprocessing import Process, Queue
import random
import time


def f(i, q):
    t = random.random() * 2
    time.sleep(t)
    print 'hello world', i
    q.put((i, 'hello world from %d' % i))

if __name__ == '__main__':
    q = Queue()
    procs = []
    for num in range(10):
        p = Process(target=f, args=(num, q))
        procs.append(p)
    
    for p in procs:
        p.start()

    for p in procs:
        p.join()
    
    print 'Queue size:', q.qsize()
    while not q.empty():
      i, msg = q.get()
      print i, msg