run_server.py

#!/usr/bin/env python3
import logging
import argparse

from server import app, socketio

log = logging.getLogger(__name__)
__version__ = (0, 0, 1)


def main():
    # argparse setup
    # noinspection PyTypeChecker
    parser = argparse.ArgumentParser(
        formatter_class=argparse.ArgumentDefaultsHelpFormatter,
        description='datenight server')

    # optional arguments
    parser.add_argument('-v', action='count', default=0,
                        help="verbosity increases with each 'v' | "
                             "critical/error/warning/info/debug")
    parser.add_argument('-a', '--all-interfaces', action="store_true",
                        help="Listen on 0.0.0.0? (otherwise 127.0.0.1)")
    parser.add_argument('-p', '--port', default=5500, type=int,
                        help="port to listen on")
    parser.add_argument('-d', '--debug', action="store_true",
                        help="run in debug mode "
                             "(Warning: don't run this with -a)")
    parser.add_argument('-V', '--version', action='version',
                        version="%(prog)s v{}".format(
                            '.'.join(map(str, __version__))),
                        help="Show version and exit")

    args = parser.parse_args()

    # logger setup
    level = max(10, 50 - (10 * args.v))
    print(f'Logging level is: {logging.getLevelName(level)}')
    logger = logging.getLogger(__name__)
    logger.setLevel(level)
    formatter = logging.Formatter('%(asctime)s: %(levelname)s:\t%(message)s')
    sh = logging.StreamHandler()
    sh.setFormatter(formatter)
    logger.addHandler(sh)

    logger = logging.getLogger('server')
    logger.setLevel(level)
    logger.addHandler(sh)

    # run flask
    host = "0.0.0.0" if args.all_interfaces else "127.0.0.1"
    socketio.run(app, host=host, port=args.port, debug=args.debug)


if __name__ == '__main__':
    main()