Python script to get text from telnet-router.

#! /usr/bin/env python
# -*- coding: utf-8 -*-
 
import getpass
import sys
import telnetlib
 
def get_ip(tn):
  tn.write("3\n")
  tn.write("3\n")
  print "\nEntrando en WAN..."
 
  buf = tn.read_until("Hit <enter> to continue")
  buf = buf.splitlines()
  print buf[1]
 
  ip='None'
  for l in range(len(buf)):
    if buf[l].find("PPPoE") >= 0:
      ip = buf[l].strip().rsplit()[10]
  print ip
  return ip
 
 
def connect():
  HOST = "192.168.1.1"
  user = "user"
  password = "password"
 
  tn = telnetlib.Telnet(HOST, 23)
  tn.set_debuglevel(0)
 
  tn.read_until("Login: ")
  print "\nLogin..."
  tn.write(user + "\n")
 
  tn.read_until("Password: ")
  print"\nPass..."
  tn.write(password + "\n")
  return tn
 
def main():
  tn = connect()
  tn.set_debuglevel(0)
  print "\nConectado!"
  print "\nIp actual: "+get_ip(tn)
  tn.close()
 
main()