Function execute

scrapy/cmdline.py:169–215

(argv: list[str] | None = None, settings: Settings | None = None)

def execute(argv: list[str] | None = None, settings: Settings | None = None) -> None:
    if argv is None:
        argv = sys.argv

    if settings is None:
        settings = get_project_settings()
        # set EDITOR from environment if available
        try:
            editor = os.environ["EDITOR"]
        except KeyError:
            pass
        else:
            settings["EDITOR"] = editor

    inproject = inside_project()
    cmds = _get_commands_dict(settings, inproject)
    cmdname = _pop_command_name(argv)
    if not cmdname:
        _print_commands(settings, inproject)
        sys.exit(0)
    elif cmdname not in cmds:
        _print_unknown_command(settings, cmdname, inproject)
        sys.exit(2)

    cmd = cmds[cmdname]
    parser = ScrapyArgumentParser(
        formatter_class=ScrapyHelpFormatter,
        usage=f"scrapy {cmdname} {cmd.syntax()}",
        conflict_handler="resolve",
        description=cmd.long_desc(),
    )
    settings.setdict(cmd.default_settings, priority="command")
    cmd.settings = settings
    cmd.add_options(parser)
    opts, args = parser.parse_known_args(args=argv[1:])
    _run_print_help(parser, cmd.process_options, args, opts)

    if cmd.requires_crawler_process:
        if (
            settings["TWISTED_REACTOR"] == _asyncio_reactor_path
            and not settings.getbool("FORCE_CRAWLER_PROCESS")
        ) or not settings.getbool("TWISTED_REACTOR_ENABLED"):
            cmd.crawler_process = AsyncCrawlerProcess(settings)
        else:
            cmd.crawler_process = CrawlerProcess(settings)
    _run_print_help(parser, _run_command, cmd, args, opts)
    sys.exit(cmd.exitcode)


def _run_command(cmd: ScrapyCommand, args: list[str], opts: argparse.Namespace) -> None: