获取ping中的丢包和网络时延

直接上代码，主要是用正则和多线程实现的

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

import subprocess
import re
import sys
import os
import threading

mlock = threading.Lock()
def getPING(ip,item):  
    regLost = r'(\d+)%'   #定义获取丢包率的正则
    regSec = r'min/avg/max/mdev = ([0-9.]+)/([0-9.]+)/([0-9.]+)/([0-9.]+)\sms'  #定义获取网络时延的正则
    mlock.acquire()   #加锁
    try:
        p = subprocess.Popen("ping -c 30 -i 0.5 %s" %ip, stdin = subprocess.PIPE, stdout = subprocess.PIPE, stderr = subprocess.PIPE, shell = True)  
        out = p.stdout.read().decode('utf-8')  
        lost = re.search(regLost,out)
        sec = re.search(regSec,out)
        reglost = lost.group().split("%")[0]
        avgsec = sec.groups()[1]
    except Exception as e:
        pass
    mlock.release()   #释放锁

if __name__ == '__main__':
   threads = []
   fr = open("ip.list","r")
   while True:
        line = fr.readline()
        if line:
           ip = line.strip("\n").split(",")
           t = threading.Thread(target=getPING,args=ip)   #args=是放参数的，target=后面跟的是需要执行的函数
           threads.append(t)    #执行一次函数往列表里添加一次，在下面的迭代中需要用到
        else:
           break
   for t in threads:
       try:
          t.start()
       except Exception as e:
          continue
   for t in threads:
       t.join()