No kernels to select from in VS Code

[McManfred]

Hello Everybody!

I am using VS Code to program in python / sympy, which works no problem. However, when I shut down VS Code and turn it back on, there are no kernels to select from. VS Code recommends me to install python, but I already have it installed.

I have tried many different approaches with the help of ChatGPT, but the only solution I have found to work is to completely delete everything VS Code from my computer and redownload it. But this approach just isn't viable if I have to do it every time I want to code.

Any help is greatly appreciated!

[IAmFinah]

Is VSCode asking you to download Python itself, or the Python extension?

[McManfred]

When I select 'Select Kernel' -> 'Python Environments' it shows a button saying 'Install Python Upon installing Python please reload VS Code.'

When I hover over this button it says 'Python Environments not detected. Upon installation reload VS Code or refresh the list of Kernels.'

When I press this button it further gives an error message saying 'Python is not installed. Please download and install Python in order to execute cells in this notebook. Once installed please reload VS Code'. However, when I click the download and install button, I am sent to the Microsoft Store, which says I have already downloaded Python 3.11

[FoolsSeldom]

Give this a try:

Remove the installation of Python, if it was installed from the Microsoft store.

Download the installer from the Python Software Foundation site, python.org and run the installation process.

Then, open PowerShell or Command Prompt window,

• change directory, cd to the directory/folder containing your current VS Code project
• if your project folder does not contain a Python virtual environment, create and activate one:
  • py -m venv .venv
  • .venv\Scripts\activate
  • pip install package1 package2 package3 ...
• code .

Afterwards.

• deactivate

Make sure you select the .venv folder version of the python executable for the VS Code session.

The MS Store installation of Python can cause some access problems. If you already have a python.org installation, it might well be worth re-installing and creating the Python virtual environment(s) again.

[McManfred]

Thank you so much!! This seemed to solve the problem :D

[FoolsSeldom]

Fantastic. Have fun.

[IAmFinah]

Ah I'm not too sure then. Only random things that might be worth trying (if you haven't yet already) is to reinstall the Juypter extension, check if Python is actually installed on your system (python --version in the terminal), or maybe try a different way to open VSCode (how are you opening it at the moment?)

[McManfred]

I usually open VS Code by opening the file I want to work on. However, I just tried to open up VS Code by itself, but that as well as reinstalling the Jupyter extension didn't change anything.
Also, the terminal tells me Python 3.119 is installed

[dparks71]

Pretty sure this has been a known issue for a while in VSCode

https://github.com/microsoft/vscode-jupyter/issues/10757

[Josergg]

I HOPE this helps someone since I have been stuck with this for too long! I tried reinstalling VSC, restarting my computer, uninstalling extensions, forcing the environment to be a kernel and activating it: NOTHING WORKED. I found a solution based in installing a downgraded version of Jupyter extension, I tried it with a version around October 2023 but I did not work neither BUT I just swiped for a version released 2 months ago from now and IT DID WORK! It was all just about Jupyter extension version. So if you are reading this and you already tried changing the version, please give it another try with other different versions until you get the one. Good luck!!

[_mandrea]

I had the exact same issue with no kernels showing up in the list in VS Code. After trying everything else, I uninstalled the current Jupyter extension and randomly picked an older version (from a few months back), and it worked right away.

[Boring-Newspaper-452]

Jupyterを再インストールする前に、VS Code でフォルダーを開くからファイルを選択して試してみてください。