Python + NAPALM | Script para mostrar inventario de Hosts con su serial number

ARCHIVO DE HOSTS

nano /home/eve/hosts

192.168.1.100
192.168.1.17

SCRIPT

import napalm
import json

f = open ("/home/eve/hosts")

for line in f:
    host = line.strip()
    driver = napalm.get_network_driver('ios')
    device = driver(hostname=host, username='cisco', password='cisco')
    device.open()
    getfacts = device.get_facts()
    get_serialnumber = getfacts["serial_number"]
    print (host + "     " + get_serialnumber)
    device.close()

RESULTADO (OUTPUT) 

eve@Linux-Desktop:~$ python3 test1_6.py
192.168.1.100        FTX0945W0MY
192.168.1.17        FTX0945W0MY