进程池与列表循环多参传递

使用列表循环的示例#coding: utf-8import multiprocessingimport timedef func(msg, msg2):    print "msg:", msg    time.sleep(3)    print "end"    print msg2list = ["test", "hello", "hi", "good", "yes", "well"]if __name__ == "__main__":    pool = multiprocessing.Pool(processes = 3)    for i in list:        msg = "hello"        pool.apply_async(func, (msg, i))   #维持执行的进程总数为processes，当一个进程执行完毕后会添加新的进程进去    print "Mark~ Mark~ Mark~~~~~~~~~~~~~~~~~~~~~~"    pool.close()    pool.join()   #调用join之前，先调用close函数，否则会出错。执行完close后不会有新的进程加入到pool,join函数等待所有子进程结束    print "Sub-process(es) done."