Python how to get your public ip address

import urllib
import re

print "we will try to open this url, in order to get IP Address"

url = "http://checkip.dyndns.org"

print url

request = urllib.urlopen(url).read()

theIP = re.findall(r"d{1,3}.d{1,3}.d{1,3}.d{1,3}", request)

print "your IP Address is: ",  theIP