python中使用subprocess来使用shell
关于threading的用法
from __future__ import print_function import subprocess import threading def is_reachable(ip): if subprocess.call(["ping", "-c", "2", ip])==0:#只发送两个ECHO_REQUEST包 print("{0} is alive.".format(ip)) else: print("{0} is unalive".format(ip)) if __name__ == "__main__": ips = ["www.baidu.com","192.168.0.1"] threads = [] for ip in ips: thr = threading.Thread(target=is_reachable, args=(ip,))#参数必须为tuple形式 thr.start()#启动 threads.append(thr) for thr in threads: thr.join()
改良 :使用Queue来优化(FIFO)
from __future__ import print_function import subprocess import threading from Queue import Queue from Queue import Empty def call_ping(ip): if subprocess.call(["ping", "-c", "2", ip])==0: print("{0} is reachable".format(ip)) else: print("{0} is unreachable".format(ip)) def is_reachable(q): try: while True: ip = q.get_nowait()#当队列为空,不等待 call_ping(ip) except Empty: pass def main(): q = Queue() args = ["www.baidu.com", "www.sohu.com", "192.168.0.1"] for arg in args: q.put(arg) threads = [] for i in range(10): thr = threading.Thread(target=is_reachable, args=(q,)) thr.start() threads.append(thr) for thr in threads: thr.join() if __name__ == "__main__": main()
以上这篇对python判断ip是否可达的实例详解就是小编分享给大家的全部内容了,希望能给大家一个参考,也希望大家多多支持呐喊教程。
声明:本文内容来源于网络,版权归原作者所有,内容由互联网用户自发贡献自行上传,本网站不拥有所有权,未作人工编辑处理,也不承担相关法律责任。如果您发现有涉嫌版权的内容,欢迎发送邮件至:notice#nhooo.com(发邮件时,请将#更换为@)进行举报,并提供相关证据,一经查实,本站将立刻删除涉嫌侵权内容。