Python3 /24 CIDR scanner using system ping

ping.py

#! /usr/bin/python3
import subprocess
import re

cmd = ['ping','-c1','-w1']
for i in range (1,255):
        address="10.11.1."+str(i)
        runcmd=cmd+[address]
        result = subprocess.Popen(runcmd,stdout=subprocess.PIPE)
        output = str(result.stdout.read())
        m = re.search('bytes from (.+?):',output)
        if (m):
                print(m.group(1))