How to get private Ip and public Ip in Python

getIp.py

#!/usr/bin/env python
import sys

def getIp():
    import socket
    s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
    s.connect(("google.com",80))
    out = (s.getsockname()[0])
    s.close()
    return out

def getPublicIp():
    import urllib2
    URL = "http://ifconfig.cc"
    f = urllib2.urlopen(URL)
    ip = f.read()
    return ip