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How to use default_or_flatten_and_uniq method in devtools-proxy

Best Python code snippet using devtools-proxy_python

proxy.py

Source:proxy.py

...226        client_id = encoded_id >> (bits_available - bits_for_client_id)227        request_id = encoded_id & max_request_id228        return client_id, request_id229    return encode_id, decode_id, _max_clients230def default_or_flatten_and_uniq(arg, default):231    # Simple helper for parsing arguments with action='append' and default value232    if arg is None:233        return default234    else:235        return list(set(e for ee in arg for e in ee))236def main():237    parser = argparse.ArgumentParser(238        prog='devtools-proxy',239        description='DevTools Proxy'240    )241    default_host = ['127.0.0.1']242    parser.add_argument(243        '--host',244        type=str, nargs='+', action='append',245        help=f'Hosts to serve on (default: {default_host})',246    )247    default_port = [9222]248    parser.add_argument(249        '--port',250        type=int, nargs='+', action='append',251        help=f'Ports to serve on (default: {default_port})',252    )253    parser.add_argument(254        '--chrome-host',255        type=str, default='127.0.0.1',256        help=('Host on which Chrome is running, '257              'it corresponds with --remote-debugging-address Chrome argument (default: %(default)r)'),258    )259    parser.add_argument(260        '--chrome-port',261        type=int, default=12222,262        help=('Port which Chrome remote debugger is listening, '263              'it corresponds with --remote-debugging-port Chrome argument (default: %(default)r)'),264    )265    parser.add_argument(266        '--max-clients',267        type=int, default=8,268        help='Number of clients which proxy can handle during life cycle (default: %(default)r)',269    )270    parser.add_argument(271        '--log',272        default=sys.stdout, type=argparse.FileType('w'),273        help='Write logs to file',274    )275    parser.add_argument(276        '--version',277        action='version',278        version=VERSION,279        help='Print DevTools Proxy version',280    )281    parser.add_argument(282        '--debug',283        action='store_true', default=False,284        help='Turn on debug mode (default: %(default)r)',285    )286    args = parser.parse_args()287    encode_id, decode_id, max_clients = encode_decode_id(args.max_clients)288    args.port = default_or_flatten_and_uniq(args.port, default_port)289    args.host = default_or_flatten_and_uniq(args.host, default_host)290    arguments = {291        'f': {292            'encode_id': encode_id,293            'decode_id': decode_id,294            'print': lambda *a: args.log.write(' '.join(str(v) for v in a) + '\n'),295            'close_log': lambda: args.log.close(),296        },297        'max_clients': max_clients,298        'debug': args.debug,299        'proxy_hosts': args.host,300        'proxy_ports': args.port,301        'chrome_host': args.chrome_host,302        'chrome_port': args.chrome_port,303        'internal': {...

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