Request the current 'external' (Internet-facing) IP address as reported by http://httpbin.org/io and send it to stdout. Useful if you are running on a 'net connection with a non-static IP address. This probably won't do much for you if you're behind a proxy.

myip.py

#!/usr/bin/env python

"""
Get the 'external' IP address using httpbin.org JSON API.
(http://httpbin.org/ip)

Author: Michael Curry (thatmichaelcurry [at] gmail)

Requires requests 2 or higher.

http://httpbin.org/ip responds with the following JSON snippet:

    {
      origin: "a.b.c.d"
    }


Distributed under the MIT license.   No warrantees!
http://opensource.org/licenses/MIT

"""

import requests
import sys

# TIMEOUT is used by requests.get() to control the response timeout.
# http://docs.python-requests.org/en/latest/user/quickstart/#timeouts
TIMEOUT = 5

try:
    r = requests.get('http://httpbin.org/ip', timeout=TIMEOUT)
    extern_ip = r.json()['origin']
    print extern_ip
    sys.exit(0)
except KeyError as e:
    err = u"Response did not contain expected value '{0}'.".format(e.message)
except requests.exceptions.ConnectionError as e:
    err = u"Server connection error."
except Exception as e:
    err = u"{0}".format(e)

sys.stderr.write(u"error: " + err + u"\n")
sys.exit(1)