import paramiko
def open_ssh_conn(ip):
  try:
  #Logging into device

  session = paramiko.SSHClient()



  session.set_missing_host_key_policy(paramiko.AutoAddPolicy())



  session.connect(ip, username = "username", password = "password")



  connection = session.invoke_shell()

  except paramiko.AuthenticationException:

  print "* Invalid username or password!"

  print "* Closing program...n"

  #Calling the SSH function
  open_ssh_conn("192.168.100.1")