A simple package to add JuliaFormatter autoformatting support to Jupyter lab and notebooks running IJulia. Inspired by my favorite Jupyter extension, nb_black.
In your notebook,
using JupyterFormatter
enable_autoformat()Afterwards, whenever you run a cell, it will automatically be formatted. If you want to turn off auto-formatting, run
disable_autoformat()
While this package works with both legacy Jupyter Notebooks and Jupyter Lab, it does have some issues in Jupyter Notebooks. On legacy notebooks only, when a cell is formatted its output will be suppressed and it will lose its In[] and Out[]. This will only happen if the cell is not already formatted properly.
For example, running this already-formatted cell will output as normal:
However, running this unformatted cell will not print properly; running this cell
Results in this formatted cell with no output
It is recommended that you run in Jupyter Lab if possible, since it does not have this issue.