Converts Un*x's /etc/ethers & /etc/hosts to OpenWRT's /etc/config/dhcp

hosts2openwrt.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
#
# Converts /etc/ethers & /etc/hosts to OpenWRT's /etc/config/dhcp
#
# Copyright (C) 2019 Krzysztof Burghardt <krzysztof@burghardt.pl>
# License: CC-BY
#

ENTRY = """config host
	option name '{0}'
	option dns '1'
	option mac '{1}'
	option ip '{2}'
"""

with open("hosts") as hf:
    for line in hf:
        l = line.split()
        ip = l[0]
        hostname = l[1]
        for ether in open("ethers"):
            if hostname in ether:
                l = ether.split()
                mac = l[0]
                print(ENTRY.format(hostname, mac, ip))