Validate IP:PORT

ip_port_lol.py

import re

b = '123.0.1.00:1212'


naiveip_re = re.compile(r"""^(?:
(?P<addr>
    (?P<ipv4>\d{1,3}(?:\.\d{1,3}){3}) |         # IPv4 address
    (?P<ipv6>\[[a-fA-F0-9:]+\]) |               # IPv6 address
    (?P<fqdn>[a-zA-Z0-9-]+(?:\.[a-zA-Z0-9-]+)*) # FQDN
):)?(?P<port>\d+)$""", re.X)



m = re.match(naiveip_re, b)

if m is None:
    print '"%s" is not a valid port number or address:port pair.' % b