Python - Getting IP by host (호스트별 IP 가져오기)

import socket

import sys

import os

try:

hosts = os.environ['hosts']

print('=============================================')

for host in hosts.replace('\n',' ').replace(',', ' ').split():

ip = socket.gethostbyname(host)

print('{}\t{}'.format(host, ip))

print('=============================================')

except IndexError as idxErr: 

print('Usage : python3 get_ip.py <hosts>')