This script lists all devices known to a FritzBox router

list-fritzbox-devices.py

#!/bin/env python

# This script lists all devices known to a FritzBox router.

# pip install fritzconnection

# Change this:
ADDRESS = '192.168.178.1'
USER = 'YOUR USER HERE'
PASS = 'YOUR PASSWORD HERE'

from fritzconnection import FritzConnection
from fritzconnection.lib.fritzhosts import FritzHosts

fc = FritzConnection(address=ADDRESS, user=USER, password=PASS)
hosts = FritzHosts(fc)
hostsInfo = hosts.get_hosts_info()

listformat = "{:<15}  {:<17}  {:<5}  {:<20}"
print(listformat.format("IP", "MAC", "State", "Hostname"))
for host in hostsInfo:
    print(listformat.format(host['ip'], host['mac'], "ON" if host['status'] else "OFF", host['name']))