Python教程

对python判断ip是否可达的实例详解

本文主要是介绍对python判断ip是否可达的实例详解,对大家解决编程问题具有一定的参考价值,需要的程序猿们随着小编来一起学习吧!

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找一找教程网。

这篇关于对python判断ip是否可达的实例详解的文章就介绍到这儿,希望我们推荐的文章对大家有所帮助,也希望大家多多支持为之网!