Python Get Internal IP Address

import os
import urllib

# run command to get wlan0 internal IP address
command = os.popen('ifconfig | grep -A1 wlan0')

# ready the command data
client_ip = command.read()

# put the internal IP address into the query params
query = { 'client_ip' : client_ip }
url = "http://domain/path/to/some.php?"+urllib.urlencode(query)

# print the final url
print url