python - 如何摆脱 Python Jupyter notebook 错误 : 404 GET/nbextensions/nbextensions_configurator/tree_tab/main. js

Question

Sys: Macbook 2012
Python: Python 3.5.1 :: Continuum Analytics, Inc.
Anaconda: conda 4.2.13

我在 Jupyter 笔记本中使用笔记本扩展 (nbextensions) 时遇到问题，不知道如何解决该问题。尽管多次安装和重新安装(使用 pip 和/或 conda)并完全删除和重新安装 anaconda，但我最终还是想使用未显示在我的 Jupyter Notebook 工具栏上的 nbextensions。确切的症状，带有链接的日志如下。

我的错误信息:404 GET/nbextensions/nbextensions_configurator/tree_tab/main.js

目标 : 我只想再次使用笔记本扩展:-(

症状总结

我不能使用笔记本扩展。按钮没有显示在我的
nbpresent 页面以及当我尝试使用 conda packages 时
扩展，我收到一个错误。 (以下屏幕截图)

我有多个 nbextension 文件夹；不知道我是否应该删除
某事(下面的屏幕截图)

我试图完全删除我的 anaconda安装并重新安装；
没有工作尝试 pip 卸载 jupyter 和 conda 删除
jupyter 但没有改变这个问题

jupyter_path有几个不同的路径作为输出。我不知道
如果这是一个问题，但也许是。不知道删什么

以下是详细信息和屏幕截图；任何帮助表示赞赏

我把我的 log file from launching jupyter notebook with debug here

这是我的 jupyter_path 输出:

>>> from jupyter_core.paths import jupyter_path
>>> print(jupyter_path())
['/Users/linwood/Library/Jupyter', '/Users/linwood/anaconda3/share/jupyter', '/usr/local/share/jupyter', '/usr/share/jupyter']

如果这有帮助，这是我不在环境中时使用的 jupyter:

$ which jupyter
/Users/linwood/anaconda3/bin/jupyter

现在的屏幕截图:

多个 nbextension 文件夹


conda 包错误


Jupyter_path 打印输出


编辑

根据要求，javascript 控制台日志。如果这是错误的，我深表歉意，但我使用 Chrome 浏览器的“开发人员工具”控制台记录页面重新加载时的 javascript 事件。这是信息(下面的错误图片):

2. Network(X) Basics (Student).ipynb:119 loaded custom.js
default.js:48 Default extension for cell metadata editing loaded.
rawcell.js:82 Raw Cell Format toolbar preset loaded.
slideshow.js:43 Slideshow extension for metadata editing loaded.
menubar.js:240 actions jupyter-notebook:find-and-replace does not exist, still binding it in case it will be defined later...
MenuBar.bind_events @ menubar.js:240
MenuBar @ menubar.js:55
(anonymous) @ main.js:102
execCb @ require.js?v=6da8be3…:1690
check @ require.js?v=6da8be3…:865
(anonymous) @ require.js?v=6da8be3…:1140
(anonymous) @ require.js?v=6da8be3…:131
(anonymous) @ require.js?v=6da8be3…:1190
each @ require.js?v=6da8be3…:56
emit @ require.js?v=6da8be3…:1189
check @ require.js?v=6da8be3…:940
(anonymous) @ require.js?v=6da8be3…:1140
(anonymous) @ require.js?v=6da8be3…:131
(anonymous) @ require.js?v=6da8be3…:1190
each @ require.js?v=6da8be3…:56
emit @ require.js?v=6da8be3…:1189
check @ require.js?v=6da8be3…:940
enable @ require.js?v=6da8be3…:1177
init @ require.js?v=6da8be3…:783
callGetModule @ require.js?v=6da8be3…:1204
completeLoad @ require.js?v=6da8be3…:1604
onScriptLoad @ require.js?v=6da8be3…:1711
utils.js:59 load_extensions ["nbpresent/js/nbpresent.min", "nb_conda/main", "nb_anacondacloud/main", "jupyter-js-widgets/extension"]
utils.js:36 Loading extension: nbpresent/js/nbpresent.min
utils.js:36 Loading extension: nb_anacondacloud/main
require.js?v=6da8be3…:1952 GET http://localhost:8888/nbextensions/nbpresent/js/nbpresent.deps.min.js.js 
req.load @ require.js?v=6da8be3…:1952
load @ require.js?v=6da8be3…:1679
load @ require.js?v=6da8be3…:829
fetch @ require.js?v=6da8be3…:819
check @ require.js?v=6da8be3…:851
enable @ require.js?v=6da8be3…:1177
enable @ require.js?v=6da8be3…:1550
(anonymous) @ require.js?v=6da8be3…:1162
(anonymous) @ require.js?v=6da8be3…:131
each @ require.js?v=6da8be3…:56
enable @ require.js?v=6da8be3…:1114
init @ require.js?v=6da8be3…:783
(anonymous) @ require.js?v=6da8be3…:1453
require.js?v=6da8be3…:165 Uncaught Error: Script error for "nbpresent-deps"
http://requirejs.org/docs/errors.html#scripterror
    at makeError (require.js?v=6da8be3…:165)
    at HTMLScriptElement.onScriptError (require.js?v=6da8be3…:1732)
makeError @ require.js?v=6da8be3…:165
onScriptError @ require.js?v=6da8be3…:1732
session.js:54 Session: kernel_created (ac540fe3-f39d-4a3d-80c5-265638fb8811)
kernel.js:453 Starting WebSockets: ws://localhost:8888/api/kernels/445b6828-66f3-4312-a79f-3c4473345579
kernel.js:100 Kernel: kernel_connected (445b6828-66f3-4312-a79f-3c4473345579)
kernel.js:100 Kernel: kernel_ready (445b6828-66f3-4312-a79f-3c4473345579)
utils.js:36 Loading extension: nb_conda/main
utils.js:36 Loading extension: jupyter-js-widgets/extension
extension.js:88 loaded widgets
manager-base.js:195 Widget backend and frontend versions are compatible

Answer 1

安装 nbextensions
解决方案 a) 创建新的 env，激活，安装 nbextensions，安装 js/css 文件，启动 jupyter

conda create --name py39 python=3.9
conda activae py39
conda install -c conda-forge jupyter_contrib_nbextensions
jupyter contrib nbextension install --user
jupyter-notebook

解决方案 b) https://github.com/ipython-contrib/jupyter_contrib_nbextensions/issues/1012#issuecomment-309448477
事实上，如果你只想摆脱 404 Get 错误

jupyter nbextension list

你会看到输出

    Known nbextensions:
  config dir: /home/your_user/.jupyter/nbconfig
    notebook section
      nbextensions_configurator/config_menu/main disabled
      contrib_nbextensions_help_item/main disabled
      hinterland/hinterland disabled
      code_prettify/code_prettify disabled
      jupyter-js-widgets/extension disabled
    tree section
      nbextensions_configurator/tree_tab/main  enabled 
     - Validating: problems found:
     - require?  X nbextensions_configurator/tree_tab/main

转到文件中的每个主要配置并将其更改为 false。我在 中找到了所有文件~/anaconda3/etc/jupyter/nbconfig
具体 tree.json 就我而言

nano tree.json

输出

{
  "load_extensions": {
    "nbextensions_configurator/tree_tab/main": true
  }
}

将 true 改为 后假 你会摆脱404