process_usage.py 文件源码

def pool_map():
    x=[i for i in range (50) if i%2==0]
    #print x

    start=time.time()
    '''
    for i in x:
        single(i)
    print "time used " , time.time()-start
    '''
    #using multiprocess
    p=Pool(2)
    s=p.map(single,x)
    p.close()
    p.join()
    print s
    print len(s)
    print "end. Time used: ",time.time()-start