多线程,限制线程数运行,，多线程限制线程数,#encoding:ut

多线程,限制线程数运行,，多线程限制线程数,#encoding:ut

#encoding:utf8import threadingimport timedata = 0def func(sleeptime):    global data    print threading.currentThread().getName()    time.sleep(sleeptime)threads = []for i in range(0,40):    t = threading.Thread(target=func,args=(i,))    threads.append(t)num = 0for t in threads:    t.start()    while True:        #判断正在运行的线程数量,如果小于5则退出while循环,        #进入for循环启动新的进程.否则就一直在while循环进入死循环        if(len(threading.enumerate()) < 5):            break#该片段来自于http://byrx.net