Jupyterlab 无法映射快捷方式：[附加 属性 错误]

Question

我正在使用 Jupyterlab，1.2.4。我尝试了下面的配置，但它给出了一个错误。知道为什么吗？

{
  "notebook:collapse-selected-outputs": {
    "command": "notebook:hide-cell-outputs",
    "keys": [
      "O"
    ],
    "selector": ".jp-Notebook:focus"
  },    

  "notebook:expand-selected-outputs": {
    "command": "notebook:show-cell-outputs",
    "keys": [
      "O", 
      "O"
    ],
    "selector": ".jp-Notebook:focus"
  },    

  "notebook:clear-all-outputs": {
    "command": "notebook:hide-all-cell-outputs",
    "keys": [
      "Ctrl L"
    ],
    "selector": ".jp-Notebook:focus"
  },

  "notebook:collapse-all-code": {
    "command": "notebook:hide-all-cell-code",
    "keys": [
      "Shift O"
    ],
    "selector": ".jp-Notebook:focus"
  }
}

Answer 1

我刚刚复制了 System Defaults 部分中使用的相同 JSON 格式，一切正常。将其复制到 User Preferences 部分。

{
  "shortcuts": [
    {
      "command": "notebook:hide-cell-outputs",
      "keys": ["O"],
      "selector": ".jp-Notebook:focus"
    },
    {
      "command": "notebook:show-cell-outputs",
      "keys": ["O", "O"],
      "selector": ".jp-Notebook:focus"
    },
    {
      "command": "notebook:hide-all-cell-outputs",
      "keys": ["Ctrl L"],
      "selector": ".jp-Notebook:focus"
    },
    {
      "command": "notebook:hide-all-cell-code",
      "keys": ["Shift O"],
      "selector": ".jp-Notebook:focus"
    }
  ]
}

在 JupyterLab 1.2.6 上测试。