Using Python to script the configuration of Cisco devices

host_config_file.py

#
#
# add your configurations in a list format
#
host_conf = ['config t', 'interface lo10', 'description TEST-CONFIG-SCRIPT-3', 'end', 'show run int loop 10']

host_seedfile.py

#
#
# Add the host addresses you want to log into
#
#network_devices = ['x.x.x.1', 'x.x.x.2', 'x.x.x.3', 'x.x.x.4']
#
network_devices = ['10.13.0.1', '10.13.0.2']

sshscript.py

import paramiko
import time
import getpass
import os
from host_seedfile import network_devices
from host_config_file import host_conf

 
UN = raw_input("Username : ")
PW = getpass.getpass("Password : ")
 
 
#This For loop calls host list in the seed file "hostlist_script.py"
for ip in  network_devices:
    print ip
    twrssh = paramiko.SSHClient()
    twrssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
    twrssh.connect(ip, port=22, username=UN, password=PW)
    remote = twrssh.invoke_shell()
    remote.send('term len 0\n')
    time.sleep(1)
    #This for loop uses config file 'host_config1.py' to enter commands one by one
    for command in host_conf:
        remote.send(' %s \n' % command)
        time.sleep(1)
        buf = remote.recv(65000)
        print buf
        f = open('sshlogfile0001.txt', 'a')
        f.write(buf)
        f.close()
    twrssh.close()

SSH script with seed file and configuration file.