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  • python thread

    注意queue, setDaemon。

    #! /usr/bin/env python
    # -*- coding:utf-8 -*-

    from threading import Thread import subprocess from Queue import Queue num_threads
    = 3 ips = ['10.108.100.174', '119.75.218.77', '127.0.0.1'] q = Queue() def pingit(i, queue): while True: ip = queue.get() print "thread %s is pinging %s" % (i, ip) ret = subprocess.call('ping -c 3 %s' % ip, shell=True, stdout=open('/dev/null','w'))#正常则返回0,异常则返回1;stdout=open('/dev/null','w')屏蔽ping具体细节信息 if ret != 0: print "%s is down" % ip queue.task_done() for i in xrange(num_threads):#xrang比range好 t = Thread(target=pingit, args=(i, q)) t.setDaemon(True)#设置了setDaemon则线程会随着主线程关闭而关闭,python中,主线程结束后,会默认等待子线程结束后,主线程才退出 t.start() for ip in ips: q.put(ip) print "main thread is waiting..." q.join() print "Done..."
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  • 原文地址:https://www.cnblogs.com/buptmuye/p/3627834.html
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