{"record":{"id":"2ce9f26a9f30a23d","repo":"D4Vinci/Scrapling","slug":"you-must-pass-a-keyword-to-configure-current-keyw","errorCode":null,"errorMessage":"You must pass a keyword to configure, current keywords: {cls.parser_keywords}?","messagePattern":"You must pass a keyword to configure, current keywords: (.+?)\\?","errorType":"exception","errorClass":"AttributeError","httpStatus":null,"severity":"warning","filePath":"scrapling/engines/toolbelt/custom.py","lineNumber":211,"sourceCode":"    @classmethod\n    def configure(cls, **kwargs):\n        \"\"\"Set multiple arguments for the parser at once globally\n\n        :param kwargs: The keywords can be any arguments of the following: huge_tree, keep_comments, keep_cdata, adaptive, storage, storage_args, adaptive_domain\n        \"\"\"\n        for key, value in kwargs.items():\n            key = key.strip().lower()\n            if hasattr(cls, key):\n                if key in cls.parser_keywords:\n                    setattr(cls, key, value)\n                else:\n                    # Yup, no fun allowed LOL\n                    raise AttributeError(f'Unknown parser argument: \"{key}\"; maybe you meant {cls.parser_keywords}?')\n            else:\n                raise ValueError(f'Unknown parser argument: \"{key}\"; maybe you meant {cls.parser_keywords}?')\n\n        if not kwargs:\n            raise AttributeError(f\"You must pass a keyword to configure, current keywords: {cls.parser_keywords}?\")\n\n    @classmethod\n    def _generate_parser_arguments(cls) -> Dict:\n        # Selector class parameters\n        # I won't validate Selector's class parameters here again, I will leave it to be validated later\n        parser_arguments = dict(\n            huge_tree=cls.huge_tree,\n            keep_comments=cls.keep_comments,\n            keep_cdata=cls.keep_cdata,\n            adaptive=cls.adaptive,\n            storage=cls.storage,\n            storage_args=cls.storage_args,\n            adaptive_domain=cls.adaptive_domain,\n        )\n\n        return parser_arguments\n\n","sourceCodeStart":193,"sourceCodeEnd":229,"githubUrl":"https://github.com/D4Vinci/Scrapling/blob/5d213a2d4764002bfc4fed33c32fe09fa8b0bf7f/scrapling/engines/toolbelt/custom.py#L193-L229","documentation":"Raised by BaseFetcher.configure() when called with zero keyword arguments. Because the loop body never runs, the method can't configure anything, so the trailing 'if not kwargs' guard raises AttributeError listing the currently accepted parser keywords. It exists to make silent no-ops (e.g., configure(**empty_dict)) loud.","triggerScenarios":"Calling Fetcher.configure() with no args; forwarding an empty dict via configure(**{}); building kwargs conditionally and accidentally passing none of them.","commonSituations":"Dynamic config code that collects options and ends up empty; refactoring away hardcoded options and forgetting to remove the now-empty configure() call; template code that always calls configure.","solutions":["Pass at least one valid keyword: Fetcher.configure(adaptive=True).","Guard dynamic calls: only invoke configure() when your options dict is non-empty.","Validate keys against BaseFetcher.parser_keywords before forwarding."],"exampleFix":"# before\noptions = {k: v for k, v in cfg.items() if k in wanted}  # may be {}\nFetcher.configure(**options)  # AttributeError when empty\n\n# after\nif options:\n    BaseFetcher.configure(**options) if all(k in BaseFetcher.parser_keywords for k in options) else log.error('bad keys')","handlingStrategy":"validation","validationCode":"if not options:\n    logger.debug('no parser options to configure; skipping configure()')\nelse:\n    Fetcher.configure(**options)","typeGuard":"def is_nonempty_valid_options(options: dict) -> bool:\n    from scrapling.engines.toolbelt.custom import BaseFetcher\n    return bool(options) and all(k in BaseFetcher.parser_keywords for k in options)","tryCatchPattern":"try:\n    Fetcher.configure()\nexcept AttributeError as e:\n    if 'must pass a keyword' in str(e):\n        pass  # nothing to configure\n    else:\n        raise","preventionTips":["Guard dynamic configure() calls with 'if options:'.","Skip the call entirely when the options dict is empty.","Keep the accepted keyword tuple (parser_keywords) next to your config-building code."],"tags":["configuration","parser","validation","empty-args"],"backgroundTag":null,"analyzedSha":"5d213a2d4764002bfc4fed33c32fe09fa8b0bf7f","analyzedAt":"2026-08-14T22:23:09.440Z","schemaVersion":2},"datasetVersion":"2026-08-15T22:17:37.221Z"}