Default language not applied after open an python ipynb file

[ingted]

Describe the bug

With polyglot notebook installed in VS Code. Open an ipynb file with python code cells in it. Select kernel ".NET Interactive"

Even the default language configuration is F#, all the cells are initialized with C# language.

Please complete the following:

Which version of .NET Interactive are you using? (In a notebook, run the #!about magic command. ):

.NET Interactive

© 2020 Microsoft Corporation

Version: 1.0.512901+07977b2f577c0c9a2bc47fc2ca1df2f59a14c825

Library version: 1.0.0-beta.24129.1+07977b2f577c0c9a2bc47fc2ca1df2f59a14c825

Build date: 2024-03-10T05:03:32.3855964Z

• OS

  • [ ] Windows Server 2019

• Frontend

  • [ ] Visual Studio Code

[jonsequitur]

Even the default language configuration is F#

Could you provide more details? Are you describing a default for the specific notebook file? How was the notebook created?

[ingted]

Hi, ^^

https://github.com/d2l-ai/d2l-zh-pytorch-colab/blob/main/chapter_preliminaries/probability.ipynb

I don't know how it was created...

[Fxplorer]

I am experiencing an issue like this also. If I add a new file in vscode and name it (the code block) file.dib it will default to C#. I then have to change the block to f-sharp. The vscode Polyglot-notebook: Default Notebook Language setting is set to fsharp. Looking at the file.dib in a text editor, I see this

#!meta

{"kernelInfo":{"defaultKernelName":"csharp","items":[{"aliases":[],"name":"csharp"}]}}

#!fsharp

//test

so the extension seems to not be picking up the default setting.

I tried on linux and windows and both do this. linux -> LMDE6 (Linux Mint Debian Edition 6) windows -> 10

Version: 1.87.1
Commit: 1e790d77f81672c49be070e04474901747115651
Date: 2024-03-06T00:21:07.287Z
Electron: 27.3.2
ElectronBuildId: 26836302
Chromium: 118.0.5993.159
Node.js: 18.17.1
V8: 11.8.172.18-electron.0
OS: Linux x64 6.1.0-18-amd64

.NET Interactive

© 2020 Microsoft Corporation

Version: 1.0.516401+c4e9b8ca9ec9d23dc04cf02cc5bfce25a157384b

Library version: 1.0.0-beta.24164.1+c4e9b8ca9ec9d23dc04cf02cc5bfce25a157384b

Build date: 2024-03-14T21:26:06.0000000Z

[ingted]

But this works fine.

https://github.com/dotnet/TorchSharpExamples/blob/main/tutorials/FSharp/synthetic_data.ipynb

Once we open the ipynb file and all cells are in F#.

[jonsequitur]

The default language setting only affects new notebooks. Existing notebooks will have a default language set in their metadata, which takes precedence over this setting.

I don't know how it was created...

Based on the metadata from the notebook you linked, I would assume Jupyter. It doesn't contain .NET Interactive metadata but it seems like the correct behavior would be to identify the cells as being Python.

[ingted]

But when I change the kernel from CPython to .net interactive, it changes all cells into c#, even not Python....

[jonsequitur]

Yes, that's a bug.