Is it possible to set the typeCheckingMode for the whole jupyter notebook?

[omlnaut]

In jupyter notebooks, I can set typeCheckingMode for individual cells via i.e. # pyright: basic. Is it possible to do this once for a whole notebook? I tried adding a cell at the top of the notebook with that comment but it only works for its own cell.

My usecase: I want strict type checking for my .py files. I have some .ipynb files mixed in too, but I only want basic type checking for those. Pyright does not allow me to configure two different type checking modes based on the file extension. I can only exclude all *.ipynb.py files, but that also disables things like auto imports (because unknown symbols are detected in the first place). Hence my idea to turn type checking to basic at notebook level.

[github-actions[bot]]

Hi @omlnaut, I'm an AI Support assistant here to help with your issue. While the team reviews your request, I wanted to provide some possible tips and documentation that might help you in the meantime.

---

Similar Issues (FYI only, not solutions)

The following issues may or may not be related to your report. They are provided for reference only, as they may describe similar symptoms or affect the same feature, but may not be the same issue.

• Add type checking mode to execution environments – request to support different type checking modes per directory via pyrightconfig.json. #8263
• Project typeCheckingLevel as strict, individual files downgrade to basic – discussion on controlling type checking mode per subdirectory or file in config. #4715

---

The team will respond to your issue shortly. Please note this is a trial feature and may not be fully accurate. I hope these suggestions are helpful in the meantime. If this comment helped you, please give it a 👍. If the suggestion was not helpful or was incorrect, please give it a 👎. Your feedback helps us improve!

[rchiodo]

I believe this should be supported using separate folders for your notebooks. The folder can have its own pyrightconfig.json that can inherit from the root pyrightconfig.json but specify its own typechecking mode.

Something like so:

{
   "extends": "../pyrightconfig.json",
   "typeCheckingMode": "off"
}

See this for more information:
https://microsoft.github.io/pyright/#/configuration

[omlnaut]

What I understood:

Notebook cells are converted to normal py files in the background. Type checking is run on those.

What I'm asking:
When converting notebook cells to py files, can we add the #pyright at the top of each of those generated files (in the case that the first cell in the notebook is a #pyright). Or is that conversion not done by this extension?

[rchiodo]

Notebook cells aren't converted. They're just normal text documents. Adding this extra tag at the top of each would require all sorts of extra work to hide the tag from other things (like hover)

[omlnaut]

I see, then that was the bit that was missing for me. I thought notebook cells are kept in the json structure of the .ipnb file and only 'exported' to py files for pylance support. Keeping the ipynb as source of truth for the rendering.

This can be closed then. Thanks again for the discussion

[rchiodo]

VS code itself does the conversion from ipynb to textDocument. We just get textDocuments so there's no way to modify the conversion step.

[rchiodo]

Well not without having to modify every textDocument usage (meaning anything that passes us a position in one of those text documents, like completions, hover, signature help etc.)