parallel.py

import time
from multiprocessing import Process

"""
  Here's your function/task you want to make parallel
  In your case the time.sleep would be replaced with lots
    of computation
"""
def computation(threadid):
    print "starting thread ", threadid
    time.sleep(2)
    print "ending thread ", threadid

"""
  You can parallelize a function by making a Process out of the function
  read more: http://docs.python.org/2/library/multiprocessing.html
"""
def main():
    for threadid in xrange(0,3):
        p = Process(target=computation, args=(threadid,))
        p.start()

"""
  main() will finish (die) when all Processes have finished (died)
"""
if __name__ == '__main__':
    main()