Comment by kowlo

The author writes

> we decided to assist fastai in their development of a new, literate programming environment for Python, called nbdev.

but this is followed by:

> nbdev builds on top of Jupyter notebooks to fill these gaps and provides the following features

is it a new environment, or is it an extended Jupyter Notebook? It looks like Jupyter Notebook to me. Why not Jupyter Lab?

> JupyterLab: Jupyter’s Next-Generation Notebook Interface https://jupyter.org