Jupyter nbextensions 没有出现

Question

I tried to install jupyter_contrib_nbextensions: http://jupyter-contrib-nbextensions.readthedocs.io/en/latest/install.html

Everything worked fine but when I open a notebook nothing changes. I can't see the new tool bar that I'm supposed to see.

When I reinstall the Extension, the process is the same (I don't have a message tellign me that the files already exists). I don't have an error. So I can't figure out why it doesn't work.

Thanks a lot.

Answer 1

Follow 3 steps: In Terminal

pip install jupyter_contrib_nbextensions
jupyter contrib nbextension install --user
jupyter nbextension enable varInspector/main

after this you will see "Vaildating: ok" Now you can open jupyter notebook you will see the require changes

Answer 2

Update Jan 2021
I was seeing this issue using the latest from pip packages.

Turns out it was related to: https://discourse.jupyter.org/t/the-static-notebook-js-mathjaxutils-js-is-missing/7303

Basically, jupyter-notebook moved a .js file in a recent update causing the extensions tab to no longer appear.

Reverting to an older version works-around the issue:

pip install notebook==6.1.5

Also note that a substantial number of the extensions aren't officially supported by the 6.x version. So you may be better off reverting to 5.x until your desired extensions are 'officially' supported:

pip install notebook==5.7.10

Answer 3

First, follow this SO-post (go to the update) to install the extension. Then shutdown the notebook server. Then type $ jupyter nbextension enable varInspector/main . If it says OK , you can start your notebook and should see the crosshair.

Answer 4

Try this out ->

1)Open Anaconda Prompt.

2)Type in -

conda install -c conda-forge jupyter_contrib_nbextensions

(if c is the default directory)

3)Proceed with the installation.

4)Exit the Anacodna prompt.

5)Relaunch Jupyter notebook. (You will now see nbextensions tab)

Answer 5

Following are the commands which installs the jupyter nb_extensions

pip install jupyter_contrib_nbextensions
jupyter contrib nbextension install --user

The second command might give you below error:

jupyter contrib not found

Above command can be resolved as below:

- open cmd to install manually
cd .\Python\<your-python-version>\Lib\site-packages\jupyter_contrib_nbextensions
python application.py install
- Restart the jupyter notebook server

Note : Also make sure that your packages jupyter , notebook and your jupyter_contrib_nbextensions are installed for same version of python (and same --user if you have installed all your packages with --user flag)

Answer 6

Following steps with Anaconda Prompt ->

1)Open Anaconda Prompt.

2)Type in -

conda install -c conda-forge jupyter_contrib_nbextensions

3. Enter 'y' for installation.

4. type in jupyter contrib nbextension install --sys-prefix

4)Exit the Anacodna prompt.

5)Relaunch Jupyter notebook. (You will now see nbextensions tab)

6. Screenshot of my installation

Answer 7

try to run this

jupyter contrib nbextension install --user

then relaunch the Jupyter notebook. this might solve the problem as it did for me.

Answer 8

Running following command one by one !!!

pip install jupyter_contrib_nbextensions
jupyter contrib nbextension install --user
jupyter nbextension enable spellchecker/main
jupyter nbextension enable codefolding/main

Answer 9

1 quick info -
1. even after enabling nbextensions, from the notebooks tree page,
2. you need to activate it on your Jupyter notebook. See below.

Answer 10

Posting this solution because it took me 20 minutes to figure out why my interface looked so different from all of the screenshots everyone else was posting. I hope it can prevent some other soul from making the same mistake I did:

I was running my Jupyter Notebook with the command jupyter-lab instead of jupyter notebook . I understand there are functional differences between the two, but in my case having spellcheck was much more important than any of the difference the two provided. As soon as I used jupyter notebook instead, it worked perfectly.

Answer 11

Downgrading the notebook version to 5.6.0 worked for me.

pip install notebook==5.6.0

If this doesn't work for you, then return to your original version.

Good luck.

Answer 12

I followed the highest voted answer to install the nbextensions but received an error when I reboot the Jupyter Notebook:

404 GET /nbextensions/nbextensions_configurator/tree_tab/main.js?v=20220513151408

It seemed that what I've installed can not be found by Jupyter Notebook.

After checking the detailed installation log in the terminal, I found Nbextension has been installed into the python2.7 directory:

./Library/Python/2.7/lib/python/site-packages (from jupyter_contrib_nbextensions)

I am currently using Python 3 in Jupyter Notebook so I decided to uninstall what I have and reinstall Nbextension using pip3 instead of pip. Then I reboot Jupyter Notebook and saw the Nbextensions tab (next to the tab Clusters)!

In sum, based on my attempt, I would recommend using pip3 instead of pip to avoid an installation in Python 2 directory.

Answer 13

Change old path notebook/js/mathjaxutils to base/js/mathjaxutils.js to load the dependency correctly.

This solve my problem.

For details see this Github issue about this bug.