这段python代码调用windows下的ping命令，通过subprocess在其子进程里面实现，由于windows下的ping和linux下的ping返回的消息不太一样，所以这段python代码要想在linux下运行，需要修改一下正则匹配

import subprocess    
import re 
p = subprocess.Popen(["ping.exe", 'google.com'], 
                                         stdin = subprocess.PIPE, 
                                         stdout = subprocess.PIPE, 
                                         stderr = subprocess.PIPE, 
                                         shell = True)    
  
out = p.stdout.read()                                     
regex = re.compile("Minimum = (\d+)ms, Maximum = (\d+)ms, Average = (\d+)ms", re.IGNORECASE) 
print regex.findall(out)