Multiprocessing with result in python

multiprocessing_with_result.py

#!/usr/bin/env python
# -*- encoding: utf-8; py-indent-offset: 4 -*-

import os
from multiprocessing import Pool


def worker(job):
    x, y = job
    result = x ** y
    return os.getpid(), result
  
if __name__ == '__main__':
    jobs = [(1, 2), (3, 4), (5, 6), (11, 12), (13, 14), (15, 16), (21, 22), (23, 24), (25, 26)]
    
    result_buffer = []
  
    pool = Pool(processes=5)
    
    for job in jobs:
        result_buffer.append(pool.apply_async(worker, args=(job,)))
    
    pool.close()
    pool.join()
  
    results = [r.get() for r in result_buffer]

    print results
  
    for pid, result in results:
        print "working pid was: %s" % pid
        print "result is: %s" % result
        print "---"