Python find active hosts on LAN

gistfile1.txt

#!/usr/bin/python3
import os, socket

# Perform LAN scan
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
s.connect(("1.1.1.1", 80))
h = s.getsockname()[0].split(".")
h = str(h[0] + "." + h[1] + "." + h[2])
s.close()

hosts = []

print("[i] LAN scan in progress ... takes about 5 minutes")
for i in range(1,255):
        host    = h + "." + str(i)
        result  = str(os.popen("ping " + str(host) + " -w 1").read())
        if "1 received" in result:
                hosts.append(host)

print(hosts)