Get me the next available local TCP port, given a start port

nextlocalport.py

import sys
import socket
import logging

logging.getLogger().setLevel(logging.DEBUG)

port = None
startport = 8000
MAXTRIES = 10

for p in range(startport, startport + MAXTRIES):
    try:
        s = socket.socket()
        s.connect(('127.0.0.1', p))
        logging.debug("Port %s was taken, trying another", p)
    except ConnectionRefusedError:
        port = p
        break

if not port:
    logging.debug("Couldn't find an available port")
    sys.exit(1)
    
print(port)