Code formatter like nb_black for google colab

I know that for jupyter notebooks and jupyter lab, there are available code formatter extensions such as nb_blackor blackcellmagic. However when I installed them, it doesn't seem to work on google colab.

Do you know if there are any native option in colab or an extension that formats code (pep8 compliant)?

As of now (April 2023) the top answer - black - works without kernel restarts.

So

# run once
!pip install black[jupyter] --quiet
from google.colab import drive
drive.mount("/content/drive")
...
# run many times
!black /content/drive/MyDrive/'Colab Notebooks'/'HiringBias.ipynb'

plus page refreshing gives

reformatted /content/drive/MyDrive/Colab Notebooks/HiringBias.ipynb
All done! ✨ 🍰 ✨
1 file reformatted.

:-)