python - 建议使用 JupyterLab 构建并成功安装，但无法工作。为什么？

Question

我正在从 Anaconda 运行 JupyterLab，并安装了 JupyterLab plotly extension使用:

conda install -c conda-forge jupyterlab-plotly-extension

显然，安装成功了，但还是有问题。 启动 JuyterLab 时，我收到此提示:

点击BUILD给我这个:

然后单击RELOAD 重新加载 JupyterLab，但我再次收到此消息:

它不停地旋转。有谁知道为什么吗？

点击CANCEL也没有帮助，因为plotly不会产生任何图，只会产生blank spaces :

Answer 1

解决方案:

停用防火墙并在 Windows 命令提示符中运行以下命令:

jupyter lab build

<小时/>

详细信息:

这原来是防火墙问题，我不知道为什么在 JupyterLab 界面中不会出现这样的提示。 Windows 命令提示符中的以下命令返回以下错误消息:

命令:

jupyter lab build

输出:

C:>jupyter labextension list JupyterLab v0.34.9 Known labextensions: app dir: C:\Users*******\AppData\Local\Continuum\anaconda3\share\jupyter\lab @jupyterlab/plotly-extension v0.18.2 enabled ok

Build recommended, please run jupyter lab build: @jupyterlab/plotly-extension needs to be included in build

C:>jupyter lab build [LabBuildApp] JupyterLab 0.34.9 [LabBuildApp] Building in C:\Users*******\AppData\Local\Continuum\anaconda3\share\jupyter\lab [LabBuildApp] > node C:\Users*******\AppData\Local\Continuum\anaconda3\lib\site-packages\jupyterlab\staging\yarn.js install yarn install v1.9.4 info No lockfile found. [1/4] Resolving packages... error An unexpected error occurred: "https://registry.yarnpkg.com/@jupyterlab%2fapplication: self signed certificate in certificate chain". info If you think this is a bug, please open a bug report with the information provided in "C:\Users\*******\AppData\Local\Continuum\anaconda3\share\jupyter\lab\staging\yarn-error.log".

这部分让我怀疑防火墙问题:

self signed certificate in certificate chain

在不太严格的防火墙设置上运行相同的命令会触发此输出(缩短):

WARNING in d3-array Multiple versions of d3-array found: 1.2.4 ./~/d3-scale/~/d3-array from ./~/d3-scale/~/d3-array\src\index.js 2.2.0 ./~/d3-array from ./~/d3-array\src\index.js

Check how you can resolve duplicate packages: https://github.com/darrenscerri/duplicate-package-checker-webpack-plugin#resolving-duplicate-packages-in-your-bundle

Child html-webpack-plugin for "index.html": 1 asset Entrypoint undefined = index.html [KTNU] ./node_modules/html-loader!./templates/partial.html 567 bytes {0} [built] [YuTi] (webpack)/buildin/module.js 497 bytes {0} [built] [aS2v] ./node_modules/html-webpack-plugin/lib/loader.js!./templates/template.html 1.22 KiB {0} [built] [yLpj] (webpack)/buildin/global.js 489 bytes {0} [built] + 1 hidden module

尽管有一些警告消息，JupyterLab 现在可以毫无问题地生成绘图: