import paramiko
import sys
import os
import time

port = 22

def ssh_comm(ip, user, password, cmd):
     try:
        client = paramiko.SSHClient()
        client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
        client.connect(ip, username='username', password='password')
        ssh_session = client.get_transport().open_session()
        if ssh_session.active:
           ssh_session.exec_command(cmd),
           buffer = (ssh_session.recv(4096)).decode("utf-8")
           print (buffer)
     except paramiko.AuthenticationException:
        ssh_comm2(ip, user, password, cmd) **#TRIES NEXT SET OF CREDENTIALS**

def cmd_loop_ssh():
        while True:
                cmd = input('Command: ')
                ssh_comm(ip, user, password, cmd)

ip = input('IP: ')
cmd_loop_ssh()

iplist = 'IP TEXT FILE LOCATION.txt'
    with open(iplist, 'r') as fp:
        line = fp.readline()
        while line:
            print ('{}'.format(line.strip()))
            line = fp.readline()