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Choosing a kernel for the first time does not cause a kernel change event #16112

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imadjarov-quantinuum opened this issue Oct 8, 2024 · 2 comments · May be fixed by microsoft/vscode-python#24358
Open
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Choosing a kernel for the first time does not cause a kernel change event #16112

imadjarov-quantinuum opened this issue Oct 8, 2024 · 2 comments · May be fixed by microsoft/vscode-python#24358
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@DonJayamanne
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bug Issue identified by VS Code Team member as probable bug info-needed Issue requires more information from poster notebook-intellisense Intellisense & other language features in notebook cells for any language

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@imadjarov-quantinuum
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Applies To

  • Notebooks (.ipynb files)
  • Interactive Window and/or Cell Scripts (.py files with #%% markers)

What happened?

This is related to the recently closed #15967 (@rchiodo @DonJayamanne)

When choosing a kernel for a notebook that has had no previous kernel selected, a "kernel change event" (as discussed in the issue above) is not fired. For example, Pylance (v2024.10.1) does not start highlighting syntax with the newly selected kernel. Only once another kernel is selected again does this event fire and Pylance starts highlighting code. It seems like the above bugfix only works once you select a kernel more than once.

I am running this via SSH Remote btw.

VS Code Version

1.94.0

Jupyter Extension Version

2024.9.1

Jupyter logs

No response

Coding Language and Runtime Version

Python

Language Extension Version (if applicable)

2024.16.0

Anaconda Version (if applicable)

No response

Running Jupyter locally or remotely?

Remote
@imadjarov-quantinuum imadjarov-quantinuum added the bug Issue identified by VS Code Team member as probable bug label Oct 8, 2024
@DonJayamanne
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@rchiodo I'm struggling to understand this issue here. If no kernel was ever selected, then selecting a kernel will definitely cause a change event as there was no information to start with.

@imadjarov-quantinuum Please can you install the latest pre-release versions of Jupyter and Pylance and confirm this works.

@DonJayamanne DonJayamanne added info-needed Issue requires more information from poster notebook-intellisense Intellisense & other language features in notebook cells for any language labels Oct 28, 2024
@rchiodo
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rchiodo commented Oct 28, 2024

@DonJayamanne I haven't seen this myself. Does jupyter log the get kernel request? Pylance does not, it just makes the call when getting the python path for a file.

This was referenced Oct 30, 2024
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bug Issue identified by VS Code Team member as probable bug info-needed Issue requires more information from poster notebook-intellisense Intellisense & other language features in notebook cells for any language
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@DonJayamanne @rchiodo @imadjarov-quantinuum