EViews.com

The capability to run EViews from within a Jupyter notebook is very useful.
This raises the elementary and ignorant question:
Is the inverse available: ie, to run a Jupyter notebook from within EViews?
If so, could you please give an example of how to do so?

What does "run a Jupyter notebook" mean?

Sorry - I am displaying complete ignorance here.
I have some Jupyter notebooks which run Machine Learning algorithms. I know that Jupyter notebooks normally run in a browser.
I am just wondering if I could, from within EViews, pass data to them, run the corresponding (implicit) programmes, and then bring back results into EViews.
Perhaps it woud be simpler just to reformat the notebooks as Python programmes and run those from within EViews using xopen(p)?

Yes, Jupyter is just an interface for running Python (or other) programs. You can run Python from within EViews, so there isn't much benefit to putting Jupyter inbetween.