get_random_port.py

# coding: utf-8
from __future__ import print_function
import random
import socket


def get_random_port():
    random.seed()
    while True:
        port = random.randint(4000, 16000)
        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        try:
            sock.bind(('127.0.0.1', port))
        except OSError:
            continue
        finally:
            sock.close()
        return port


if __name__ == '__main__':
    print(get_random_port())