Related: I found out about a vim/neovim plugin called Molten[1] that tries to be a replacement for Jupyter Notebooks in the terminal. It was a little rough around the edges ~5 months ago when I tried it, but looking at the repo it seems its still being actively developed, so maybe that's changed. IIRC it uses an ipynb server to keep track of each cell's outputs. I quite enjoyed using it as someone who doesn't need notebooks very often and loathes leaving my terminal setup.