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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def run():
 """The entry point from the praw-multiprocess utility."""

    parser = OptionParser(version='%prog {0}'.format(__version__))
    parser.add_option('-a', '--addr', default='localhost',
                      help=('The address or host to listen on. Specify -a '
                            '0.0.0.0 to listen on all addresses. '
                            'Default: localhost'))
    parser.add_option('-p', '--port', type='int', default='10101',
                      help=('The port to listen for requests on. '
                            'Default: 10101'))
    options, _ = parser.parse_args()
    try:
        server = ThreadingTCPServer((options.addr, options.port),
                                    RequestHandler)
    except (socket.error, socket.gaierror) as exc:  # Handle bind errors
        print(exc)
        sys.exit(1)
    print('Listening on {0} port {1}'.format(options.addr, options.port))
    try:
        server.serve_forever()  # pylint: disable=E1101
    except KeyboardInterrupt:
        server.socket.close()  # pylint: disable=E1101
        RequestHandler.http.close()
        print('Goodbye!')