{"record":{"id":"4e78d0f116db86b2","repo":"datawhalechina/hello-agents","slug":"note-id-output-4e78d0","errorCode":null,"errorMessage":"无法从输出解析 note_id:\n{output}","messagePattern":"无法从输出解析 note_id:\n(.+?)","errorType":"exception","errorClass":"ValueError","httpStatus":null,"severity":"error","filePath":"Co-creation-projects/lgs-only-NovelGenerator/agents/outline_agent.py","lineNumber":14,"sourceCode":"from dotenv import load_dotenv\nload_dotenv()\nfrom hello_agents import SimpleAgent, HelloAgentsLLM\nfrom hello_agents.tools import NoteTool\nfrom prompt import OUTLINE_PROMPT\nimport re\nimport os\n\n\ndef extract_note_id(output: str) -> str:\n    \"\"\"从 NoteTool 的输出文本中提取 note_id\"\"\"\n    match = re.search(r\"ID:\\s*(note_[0-9_]+)\", output)\n    if not match:\n        raise ValueError(f\"无法从输出解析 note_id:\\n{output}\")\n    return match.group(1)\n\n\nclass OutlineAgent(SimpleAgent):\n    \"\"\"小说大纲生成Agent\"\"\"\n\n    def __init__(self, name: str, llm: HelloAgentsLLM = HelloAgentsLLM(), **kwargs):\n        self.workspace = kwargs.pop(\"workspace\", \"./outputs\")\n        super().__init__(name=name, llm=llm)\n        self.outline_length = 3000\n        self.note_tools = {}\n\n    def _ensure_tool(self, novel_id: str, title: str = None):\n        if not self.note_tools.get(novel_id):\n            if not title:\n                raise ValueError(f\"Tool for novel_id {novel_id} not initialized and title not provided.\")\n            self.note_tools[novel_id] = NoteTool(workspace=os.path.join(self.workspace, f\"{title}-{novel_id}\", 'outline'))\n","sourceCodeStart":1,"sourceCodeEnd":32,"githubUrl":"https://github.com/datawhalechina/hello-agents/blob/606a07d341a47be773fab7f4b71177f53f96b2c3/Co-creation-projects/lgs-only-NovelGenerator/agents/outline_agent.py#L1-L32","documentation":"outline_agent.py duplicates the extract_note_id helper: it regex-parses NoteTool output for r\"ID:\\s*(note_[0-9_]+)\" and raises ValueError when the pattern is absent. For OutlineAgent this usually happens on the very first tool call of a run (outline creation), so the whole outline-generation flow aborts before any chapter work starts. Root cause is always the same: the text handed to the parser does not contain a parsable note-id line.","triggerScenarios":"OutlineAgent.generate() captures the SimpleAgent transcript and the NoteTool output line with 'ID: note_...' is missing because creation failed; running against a different hello_agents version whose NoteTool format changed; the note id uses characters outside [0-9_]; output was localized (e.g. full-width '：' colon) so the regex misses.","commonSituations":"New environment where the note store is not writable (./outputs permissions); hello-agents upgraded between writing and running the agent; team shares prompts but not the pinned library version; empty workspace passed to OutlineAgent so NoteTool errors out.","solutions":["Log the raw NoteTool output right before parsing to identify whether it is an error message or a format change.","Ensure the note backend works: workspace directory exists and is writable, novel_id valid, NoteTool importable and initialized.","Relax the regex to tolerate label/case/colon variations: r\"(?:ID|note_id)\\s*[:：]?\\s*(note_[0-9A-Za-z_-]+)\" with re.IGNORECASE.","Deduplicate: import one shared extract_note_id from a common module instead of the copies in outline_agent.py and chapter_generate_agent.py so a format fix lands everywhere at once.","Pin hello-agents==<tested version> in requirements."],"exampleFix":"# before\nmatch = re.search(r\"ID:\\s*(note_[0-9_]+)\", output)\n# after\nmatch = re.search(r\"(?:ID|note_id)\\s*[:：]?\\s*(note_[0-9A-Za-z_-]+)\", output, re.IGNORECASE)","handlingStrategy":"try-catch","validationCode":"import re\nNOTE_ID_RE = re.compile(r\"ID:\\s*(note_[0-9_]+)\")\nif not NOTE_ID_RE.search(tool_output):\n    raise RuntimeError(f\"outline creation produced no note id: {tool_output!r}\")","typeGuard":"import re\nfrom typing import Optional\n\ndef try_extract_note_id(output: str) -> Optional[str]:\n    m = re.search(r\"ID:\\s*(note_[0-9_]+)\", output)\n    return m.group(1) if m else None","tryCatchPattern":"try:\n    note_id = extract_note_id(output)\nexcept ValueError as e:\n    # surface the tool output for diagnosis, then abort or retry generation\n    logger.exception(\"outline note_id extraction failed\")\n    raise","preventionTips":["Deduplicate extract_note_id into one shared module","Verify the note store is writable before generation runs","Test the regex against a recorded NoteTool output snapshot"],"tags":["parsing","regex","llm-output","python","code-duplication"],"backgroundTag":null,"analyzedSha":"606a07d341a47be773fab7f4b71177f53f96b2c3","analyzedAt":"2026-08-14T22:57:27.446Z","schemaVersion":2},"datasetVersion":"2026-08-15T22:17:37.221Z"}