bu

import getpass
import sys
import telnetlib

user = raw_input("Enter your remote account: ")
password = getpass.getpass()

#open the file that contains the devices IP address
f = open("laitteet.txt")

#build For loop to check to do the below on all the devices
for line in f:
   print "sanity checks for Router" + " " + (line)
   HOST=line
   telnet = telnetlib.telnet(HOST)
   telnet.read_until('Username: ')
   telnet.write(user + "\n")
   if password:
      telnet.read_until("password:")
      telnet.write(password + "\n")

#write all the commands needed to be done on all the devices
    telnet.write("show version\n")
    telnet.write("show inventory\n")
    telnet.write("show ip int brief\n")
    telnet.write("exit\n")
    #readoutput variable is to read all the output from telnet
     readoutput = tn.read_all()

# by default the File opened is read only , so we need also to enable writing
     saveoutput = open ("router" + " " + HOST +.txt , "w")

#write the output in readoutput variable in saveoutput
     saveoutput.write (readoutput)

#save the File
saveoutput.close