Simple multi-client server for my nephew

server.py

#!/usr/bin/env python3

import argparse
import select
import socket

def parse_options():
    parser = argparse.ArgumentParser()
    parser.add_argument('-p', '--port', type=int, required=True)
    options = parser.parse_args()
    return options

def main(options):
    clients = []

    server = socket.socket()
    server.bind(('0.0.0.0', options.port))
    server.listen(1)
    print(f'listening on port {options.port}')

    while True:
        rlist, wlist, xlist = select.select([server] + clients, [], [])
        for sock in rlist:
            if sock is server:
                client, addr = server.accept()
                print(f'new client from {addr}')
                clients.append(client)
                continue

            msg = sock.recv(1024)
            for client in clients:
                if sock is client:
                    continue
                client.send(msg)

if __name__ == '__main__':
    main(parse_options())