jupyter integration

[mfussenegger]

jupyter integration

[mfussenegger]

Is this possible right now?

An option could be to run debugpy within the jupyter notebook using the APIs described here: https://github.com/microsoft/debugpy/#enabling-debugging and then attach to it.

Using jupyter's own debugging mechanism is afaik currently not possible, and would require a custom implementation

Or is it easy to implement?

It looks like jupyter has its own transport (zeromq?) and wraps DAP messages in their own requests: https://jupyter-client.readthedocs.io/en/stable/messaging.html#debug-request

On a first glance it seems as if the vscode-jupyter extension takes care of translating that: https://github.com/microsoft/vscode-jupyter/blob/c0b8e355de960f0ba393235066059167aeadb3b7/src/notebooks/debugger/kernelDebugAdapterBase.ts

It should be possible to do something like that with nvim-dap, but not without some effort. It's also out-of-scope for nvim-dap-python and would probably deserve it's own extension

[mmngreco]

I never tried but I thinkg that using jupytext, https://github.com/goerz/jupytext.vim, you can open a ipynb, convert it to python script underhood and then you should be able to debug it as if it was a regular python script.

[jcvillaquira]

Yes, I can do that. The problem is that I am not able to debug a single cell. To debug I would have to run the whole file, but this is not ideal since, for example, I may want to debug the last cell without running the first part of the notebook/script. I am currently using jupytext and sending cells to an REPL.

[mmngreco]

Oh, I see the point! I concur with @mfussenegger, I think that is a very concrete implementation.

A bit offtopick, I drop here some ideas in case it could help: Personally, I would execute the whole file many times or, if I really needed, I would create a MRE. A quick way to get it done is using dill e.g. https://stackoverflow.com/a/35296032. I'm not a fan of notebooks as it's easy to mess it up and/or forget good practises, so I would check if there is a design problem on it (lack of class or high level function, or a utils module to import function from) .

[mfussenegger]

Closing this here since it's out of scope for nvim-dap-python, but it would be really cool to see a nvim-jupyter extension that includes dap support.