python single client echo server accept

echo_server_single_client.py

import socket
import select

serv = socket.create_server(("", 10_010))

readers = {serv}
while True:
    ready, _, _ = select.select(readers, (), ())
    if serv in ready:
        client, addr = serv.accept()
        serv.close()
        readers = {client}
        continue
    assert client in ready and len(ready) == 1
    reset = False
    request = client.recv(1024)
    if request:
        try:
            client.sendall(request)
        except OSError as error:
            print(f"write error on client: {error!r}")
            reset = True
    else:
        print("client disconnected")
        reset = True
    if reset:
        client.close()
        serv = socket.create_server(("", 10_010))
        readers = {serv}