Numbered headers in jupyter notebooks

Question

I'd like to change the way Jupyter displays the so called heading cells. By default, heading levels are only differentiated through a different font size. I'd like jupyter to display hierarchical numbered titles so that :

# Heading 1

# Heading 2

## Sub Heading

# Heading 3

would display something like :

1 Heading 1
2 Heading 2
2.1 Sub Heading
3 Heading 3

I don't get this with Jupyter 4.2.3.

Saravanabalagi Ramachandran · Answer 1 · 2020-01-08T11:05:41.653

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If it's only about getting the headings and numbering, then use markdown syntax, you wouldn't need any extensions (as suggested in Xiaodong's answer).

If you're trying to not only number your headings, but also looking for something that actually organizes and help you navigate around the notebook in addition to just numbering, then you will need ToC2 extension.

Install nbextensions and it's control panel

conda install -c conda-forge jupyter_contrib_nbextensions jupyter_nbextensions_configurator

Enable ToC2

Refresh and you now have nicely organized notebook

edited Jan 08 '20 at 11:05

answered Jun 18 '18 at 13:06

Saravanabalagi Ramachandran

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Thank you. But Leo have the requested behavior without any extension. They must be something simpler. – Johann Bzh Jun 20 '18 at 14:55
I agree with @johann, the query is asking a simple question and this solution is extremely heavyweight and lacks specificity to the question. – Andrew Medlin Nov 08 '18 at 00:25
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-1 for "I don't think you're trying to just number your headings." Please don't change the scope. People may indeed just want to number the headings. – isarandi May 10 '19 at 13:40
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Thanks for the comment; I've updated my answer. I agree that this is not the answer to the question, however, this may be useful for those who come here looking for more. – Saravanabalagi Ramachandran Jan 08 '20 at 11:08
This is very helpful! Also works on JupyterLab with extension: https://github.com/jupyterlab/jupyterlab-toc – egor.ananyev Feb 10 '20 at 03:26
is there an equivalent for vscode? – Marc Feb 12 '22 at 16:10
Not sure, but this worked for me I was trying to get rid of those pesky numbers in my headings. Just had to disable Toc2. – Adam D. Mar 26 '23 at 00:04

Prakhar Sharma · Answer 2 · 2022-05-11T19:14:12.060

4

I found a solution to this problem in Jupyter Lab (mine is 3.3.4) without any extension. If you have Anaconda, then both classic Jupyter and Jupyter lab comes preinstalled.

Go to Settings -> Advanced Settings Editor. In the left pane, select table of contents and enable the h1 numbering as follows.

Now open any Jupyter-notebook (.ipynb) and select The third icon on the very left panel . This will bring down the table of contents. Now click on the icon with numbering above the table of contents .

Now you will see that all the headings and subheadings are numbered everywhere.

You can use the table of contents to navigate in the Jupyter notebook.

edited May 11 '22 at 19:14

answered May 11 '22 at 15:29

Prakhar Sharma

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By "All your classical Jupyter Notebook will work in Jupyter Lab as well", do you mean. All your `.ipynb` Jupyter notebook files will work in JupyterLab as well"? – Wayne May 11 '22 at 15:46
@Wayne yeah actually both are same. – Prakhar Sharma May 11 '22 at 15:56

score 2 · Answer 3 · edited Jul 26 '18 at 14:54

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There is on tiny step I may overlooked:

conda> jupyter contrib nbextension install --user      # to activate js

perfectly explained in: http://jupyter-contrib-nbextensions.readthedocs.io/en/latest/

edited Jul 26 '18 at 14:54

Machavity

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answered Jul 26 '18 at 14:51

Oliver Prislan

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score 1 · Answer 4 · edited Mar 09 '18 at 12:32

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What you like is actually the default display style of jupyter notebook.

Input cell with markdown:

notebook display:

tested on notebook version 5.4.0

edited Mar 09 '18 at 12:32

JustBaron

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answered Mar 09 '18 at 11:43

Xiaodong

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Thank you. It seems however it is not the default display style on jupyter 4.2.3. The question still holds : how do you modify the display style of jupyter so that it number the titles? – Johann Bzh Mar 09 '18 at 11:54
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I have tried on notebook=4.2.3 as well, and got same numbered titles, so I could not re-create your problem. – Xiaodong Mar 09 '18 at 12:17
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I am using `5.5.0` and still not getting that :/ The numbering isn't happening by default (atleast for me) – Saravanabalagi Ramachandran Jun 18 '18 at 14:13
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I'm using 5.7 and not getting heading numbers. – abalter Nov 16 '18 at 20:54

Numbered headers in jupyter notebooks

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