Socket code in levels of complexity

Complexity 1, very simple. Connect using "telnet localhost 9988", send a few characters and then press <enter>
The characters are echoed back and the connection is closed

#!/usr/bin/python3
 
import socket
import sys
 
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind(("localhost", 9988))
s.listen(1)
 
while True:
    conn, addr = s.accept()
    data = conn.recv(1024)
    conn.sendall(data)
    conn.close()

Complexity 2, we can add logging

#!/usr/bin/python3 
 
import socket
import logging
import sys
 
 
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
logging.basicConfig(format='%(levelname)s - %(asctime)s: %(message)s',datefmt='%H:%M:%S', level=logging.DEBUG)
s.bind(("localhost", 9988))
s.listen(1)
 
while True:
    conn, addr = s.accept()
    data = conn.recv(1024)
    #print(data)
    logging.info(data.decode("utf-8"))
    conn.sendall(data)
    conn.close()