{
  "export": [
    "step.json"
  ],
  "keywords": [],
  "children": [
    {
      "建议使用4个空格": {
        "keywords": [],
        "children": [],
        "node_id": "python-4-23",
        "keywords_must": [],
        "keywords_forbid": []
      }
    }
  ],
  "node_id": "python-3-7",
  "keywords_must": [
    ["python", "缩进"]
  ],
  "keywords_forbid": []
}