multiprocess test

import os
from multiprocessing import Process,Pool
import time,random


def fun_proc(process_name):
    print 'child process is %s, process ID is %s' %(process_name,os.getpid())
    start=time.time()
    time.sleep(random.random()*3)
    end=time.time()
    print 'task %s runs %0.2f seconds.' %(process_name,(end-start))
    print 'child process work end!'




print  'Parents process ID is %s' % os.getpid()
print  'Parent process start working'
p=Pool(5)
for i in range(7):
    p.apply_async(fun_proc,args=(i,))
    pass


print 'child process start working'
p.close()
p.join()
print  'Parent process work end'