Reset jupyter notebook theme to default theme

This tutorial guides you on how to reset jupyter notebook theme to default theme. Let’s say you have changed notebook theme and for some reason you wanted to reset or switch back to the default one then you are at the right place.

Reset jupyter notebook theme to default theme

Before you begin, you can also check how to change the default theme in jupyter notebook.

To reset jupyter notebook theme to default theme it is very easy to do. All you need to do is to just run the following command from the command line.

> jt -r

Reset css and font defaults in:
C:\Users990\.jupyter\custom &
C:\Users990\AppData\Roaming\jupyter\nbextensions

After that, you need restart notebook server using command python -m notebook as shown below.

> python -m notebook

[W 15:05:35.698 NotebookApp] Terminals not available (error was No module named 'winpty.cywinpty')
[I 15:05:35.699 NotebookApp] Serving notebooks from local directory: C:\Users990\Documents\sneppets\Workspaces\Python\Examples
[I 15:05:35.700 NotebookApp] Jupyter Notebook 6.3.0 is running at:
[I 15:05:35.700 NotebookApp] http://localhost:8888/?token=64cdf81e74f83b74e8a3ed32aaedffd67da2d6890ee9f92f
[I 15:05:35.701 NotebookApp]  or http://127.0.0.1:8888/?token=64cdf81e74f83b74e8a3ed32aaedffd67da2d6890ee9f92f
[I 15:05:35.704 NotebookApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).
[C 15:05:35.759 NotebookApp]

    To access the notebook, open this file in a browser:
        file:///C:/Users/91990/AppData/Roaming/jupyter/runtime/nbserver-17268-open.html
    Or copy and paste one of these URLs:
        http://localhost:8888/?token=64cdf81e74f83b74e8a3ed32aaedffd67da2d6890ee9f92f
     or http://127.0.0.1:8888/?token=64cdf81e74f83b74e8a3ed32aaedffd67da2d6890ee9f92f
[W 15:05:35.958 NotebookApp] 404 GET /api/kernels/dca223c3-ee79-464e-b6a7-10424937dc20/channels?session_id=8415215f0efc411795d18f4df895b000 (127.0.0.1): Kernel does not exist: dca223c3-ee79-464e-b6a7-10424937dc20
[W 15:05:35.989 NotebookApp] 404 GET /api/kernels/dca223c3-ee79-464e-b6a7-10424937dc20/channels?session_id=8415215f0efc411795d18f4df895b000 (127.0.0.1) 32.890000ms referer=None
[W 15:05:37.648 NotebookApp] 404 GET /api/kernels/4d7b322e-6c92-4411-b71e-28d5413bcc23/channels?session_id=4d4da36b934745338bdc64fa9ddc8ac6 (::1): Kernel does not exist: 4d7b322e-6c92-4411-b71e-28d5413bcc23
[W 15:05:37.649 NotebookApp] 404 GET /api/kernels/4d7b322e-6c92-4411-b71e-28d5413bcc23/channels?session_id=4d4da36b934745338bdc64fa9ddc8ac6 (::1) 2.990000ms referer=None
[W 15:05:38.633 NotebookApp] Replacing stale connection: dca223c3-ee79-464e-b6a7-10424937dc20:8415215f0efc411795d18f4df895b000
[W 15:05:40.203 NotebookApp] Notebook MyFirstNotebook.ipynb is not trusted
[I 15:05:40.340 NotebookApp] Kernel started: b969ed9d-32ec-4ac1-bdbc-c2abc080c090, name: python3
[W 15:05:46.955 NotebookApp] Replacing stale connection: 4d7b322e-6c92-4411-b71e-28d5413bcc23:4d4da36b934745338bdc64fa9ddc8ac6

Finally reload the page. You should be able to see the default theme as shown in the following picture.

That’s it. The theme had been reset to the default one 🙂

Note: Before you reset notebook theme

To run jt commands, you should make sure that jupyterthemes package is installed on your machine. Otherwise you will get the following error.

> jt -r

'jt' is not recognized as an internal or external command,
operable program or batch file.

Therefore, I would recommend you to run the following command if you wanted to explore jupyter themes. So that you have jupyter themes installed.

>pip install jupyterthemes
Collecting jupyterthemes
  Downloading jupyterthemes-0.20.0-py2.py3-none-any.whl (7.0 MB)
     |████████████████████████████████| 7.0 MB 1.3 MB/s
Requirement already satisfied: jupyter-core in c:\users990\appdata\local\programs\python\python38-32\lib\site-packages (from jupyterthemes) (4.7.1)
Requirement already satisfied: notebook>=5.6.0 in c:\users990\appdata\local\programs\python\python38-32\lib\site-packages (from jupyterthemes) (6.3.0)
Collecting lesscpy>=0.11.2
  Downloading lesscpy-0.14.0-py2.py3-none-any.whl (46 kB)
     |████████████████████████████████| 46 kB 1.2 MB/s
Collecting matplotlib>=1.4.3
  Downloading matplotlib-3.4.1-cp38-cp38-win32.whl (7.0 MB)
     |████████████████████████████████| 7.0 MB 172 kB/s

---------

---------

Successfully installed cycler-0.10.0 jupyterthemes-0.20.0 kiwisolver-1.3.1 lesscpy-0.14.0 matplotlib-3.4.1 numpy-1.20.2 pillow-8.2.0 ply-3.11

Then you can check available themes using the following command and play around with themes.

> jt -l

Available Themes:
   chesterish
   grade3
   gruvboxd
   gruvboxl
   monokai
   oceans16
   onedork
   solarizedd
   solarizedl

That’s it. You had learnt how to reset to the default theme for jupyter notebook interface.

Hope it helped 🙂

Reset jupyter notebook theme to default theme

Reset jupyter notebook theme to default theme

Note: Before you reset notebook theme

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References