This module allows Markdown (and most HTML) to be hidden and revealed by pressing a button in an Jupyter notebook. You can also encode and decode the content using a Caesar cipher.

Revealables is useful for hiding and revealing answers to practice problems. When you choose, you can give students the password so they can decode the answers.

Pkg.add("Revealables")

You will generally want to use Revealables.jl with the hide_input Jupyter extension installed. This extension hides the code cells. Revealables will reveal the output when a button is pressed. If the extension is not installed, then the code will not be hidden. You can unhide the code cells by clicking on the chevron-up icon.

Instructions for installing Jupyter extensions can be found here. If you are using anaconda, which supplies the conda command, you can run the following:

conda install -c conda-forge jupyter_contrib_nbextensions

Then you must run:

jupyter contrib nbextension install --user
jupyter nbextension enable hide_input/main

Hide and show blocks of Markdown through code like this:

revealable("""Any Markdown can go here!""", "Button Label")

Please see the example notebook for more detail.