Jupyter 笔记本 JSON 无效

Question

我已经安装了 Anaconda3，并且正在使用一个名为 'myenv' 的环境。在那个环境中我安装了 ipywidgets

conda install --name myenv -c conda-forge ipywidgets

我可以看到这个环境中安装了ipywidgets

ipywidgets                7.1.2                    py36_0    conda-forge

当我打开笔记本时，每次都会出现以下错误：

Notebook validation failed: 'execution_count' is a required property:
{
 "data": {
  "text/html": "<p>Failed to display Jupyter Widget of type <code>HBox</code>.</p>\n<p>\n  If you're reading this message in the Jupyter Notebook or JupyterLab Notebook, it may mean\n  that the widgets JavaScript is still loading. If this message persists, it\n  likely means that the widgets JavaScript library is either not installed or\n  not enabled. See the <a href=\"https://ipywidgets.readthedocs.io/en/stable/user_install.html\">Jupyter\n  Widgets Documentation</a> for setup instructions.\n</p>\n<p>\n  If you're reading this message in another frontend (for example, a static\n  rendering on GitHub or <a href=\"https://nbviewer.jupyter.org/\">NBViewer</a>),\n  it may mean that your frontend doesn't currently support widgets.\n</p>\n",
  "text/plain": "HBox(children=(IntProgress(value=0, description='Epoch', max=2), HTML(value='')))"
 },
 "metadata": {},
 "output_type": "execute_result"
}

并且在控制台中：

Notebook JSON is invalid: 'execution_count' is a required property

关于如何解决这个问题的任何想法

Answer 1

尝试 "Kernel -> Restart & Run All"，然后 "File -> Save and Checkpoint"

Jupyter 笔记本 JSON 无效

Jupyter Notebook JSON is invalid

python

jupyter-notebook

ipywidgets