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Jlab extension for showing course levels and structure

Project description

jupyterlab_hidecell

Github Actions Status

JupyterLab extension to

  • tag cells so that they have their input, or output, or both, hidden or removed
  • can replace former 'hide-input' extension in the classic notebook

Compliance with Jupyter book

as far as possible we try to make this extension compatible with the tags used by jupyter-book as described here: https://jupyterbook.org/en/stable/interactive/hiding.html#hide-code-cell-content

Requirements

  • JupyterLab >= 4.0.0

Usage

to convert your notebooks

that were using the former hide-input extension, you can use

hideinput-to-hidecell notebook1 .. notebookN

that will replace the old hide_input: true with the new hide-input tag in all notebooks passed as arguments

palette commands and keyboard shortcuts

all commands behave as togglers, so that you can use the same shortcut to hide and show content; search for hidecell in the palette to display:

shortcut command description
Accel-0 H I hidecell:toggle-hide-input input area is hidden, a visual handle allows to toggle it back on
Accel-0 H O hidecell:toggle-hide-output same for output
Accel-0 H C hidecell:toggle-hide-cell same for whole cell
Accel-0 R I hidecell:toggle-remove-input input area is no longer visible at all
Accel-0 R O hidecell:toggle-remove-output same for output
Accel-0 R C hidecell:toggle-remove-cell same for whole cell (vanishes)
Accel-0 N hidecell:debug-on outline the cells subject to any of our tags
Accel-0 F hidecell:debug-off quit debug mode

other controls

since this exclusively relies on the presence of the above tags, you can also use jupyterlab's so called "Property Inspector" feature; however in this case you're in charge of avoiding duplicate tags...

limitations

rendering is exclusively done in CSS; converting to a non-HTML format will ruin this layout

Install

To install the extension, execute:

pip install jupyterlab-hidecell

Uninstall

To remove the extension, execute:

pip uninstall jupyterlab-hidecell

Development install

WARNING from this point on, this is the boilerplate text that comes with the extension cookie-cutter template; it is not guaranteed to be accurate

Note: You will need NodeJS to build the extension package.

The jlpm command is JupyterLab's pinned version of yarn that is installed with JupyterLab. You may use yarn or npm in lieu of jlpm below.

# Clone the repo to your local environment
# Change directory to the jupyterlab_hidecell directory
# Install package in development mode
pip install -e "."
# Link your development version of the extension with JupyterLab
jupyter labextension develop . --overwrite
# Rebuild extension Typescript source after making changes
jlpm build

You can watch the source directory and run JupyterLab at the same time in different terminals to watch for changes in the extension's source and automatically rebuild the extension.

# Watch the source directory in one terminal, automatically rebuilding when needed
jlpm watch
# Run JupyterLab in another terminal
jupyter lab

With the watch command running, every saved change will immediately be built locally and available in your running JupyterLab. Refresh JupyterLab to load the change in your browser (you may need to wait several seconds for the extension to be rebuilt).

By default, the jlpm build command generates the source maps for this extension to make it easier to debug using the browser dev tools. To also generate source maps for the JupyterLab core extensions, you can run the following command:

jupyter lab build --minimize=False

Development uninstall

pip uninstall jupyterlab-hidecell

In development mode, you will also need to remove the symlink created by jupyter labextension develop command. To find its location, you can run jupyter labextension list to figure out where the labextensions folder is located. Then you can remove the symlink named jupyterlab-hidecell within that folder.

Packaging the extension

See RELEASE

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