New version tries to pip install kernelspec

vscode version : 1.42.0 vscode-python version : 2020.2.62710 python version : 3.7.3 64-bits os : windows 10 no venv, no anaconda

I just updated VScode and the python extension. When trying to run a Jupyter notebook or a Jupyter cell, it tries to start a Jupyter server but fails and gives an error notification asking to install more dependencies. When pressing the “Install” button, it tries to pip install kernelspec.

"C:/Program Files/Python37/python.exe" c:/Users/loudur01/.vscode/extensions/ms-python.python-2020.2.62710/pythonFiles/shell_exec.py "C:/Program Files/Python37/python.exe" -m pip install -U kernelspec --user C:/Users/loudur01/AppData/Local/Temp/tmp-14796WOIAB7kweneN.log
Executing command in shell >> C:/Program Files/Python37/python.exe -m pip install -U kernelspec --user
Collecting kernelspec
 Could not find a version that satisfies the requirement kernelspec (from versions: )
No matching distribution found for kernelspec
You are using pip version 19.0.3, however version 20.0.2 is available.
You should consider upgrading via the 'python -m pip install --upgrade pip' command.
Traceback (most recent call last):
  File "c:/Users/loudur01/.vscode/extensions/ms-python.python-2020.2.62710/pythonFiles/shell_exec.py", line 26, in <module>
    subprocess.check_call(shell_args, stdout=sys.stdout, stderr=sys.stderr)
  File "C:\Program Files\Python37\lib\subprocess.py", line 347, in check_call
    raise CalledProcessError(retcode, cmd)

I tried uninstalling and reinstalling jupyter, rebooting the computer, running as admin.

Edit : rolling back to 2020.1.58038 and it works again

[Louis-DR]

@happyshows You can roll back the extension by right clicking in the extension menu (with the extension installed) and then ‘install other version’ or something like that. Select the version from last month

[rchiodo]

Hmm, not sure why we’re trying to install kernelspec. We should be installing ipykernel.

Thanks for the bug, we’ll look into it.