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)