telpy

import getpass
import sys
import telnetlib

HOST = "192.168.0.1"
user = "sk"
password = "sk"

tn = telnetlib.Telnet(HOST)

tn.read_until("login: ")
tn.write(user + "\n")
if password:
    tn.read_until("Password: ")
    tn.write(password + "\n")

tn.write("uname -r")
tn.write(b"exit\n")

print tn.read_all()