VS Code kernel is empty
Question:
I got a issue that can’t run python in VS code, I have already install the python 3.8.5, and VS code python extension, if I switch to the 3.8.5 it shows this kernel is not started, and if I run the codes it will ask me to install the Data Science component and ipykernel, after I install the ipykernel it will switch to empty kernel automatically. Please refer to the screenshot:
Thanks.
Answers:
I think there is a compatibility issue of jupyter with python 3.8
Try downgrading to python 3.7
When you run pip install ipykernel, the terminal shows ‘Requirement already statisfied’ and it exists in C:userswilliamappdataroamingpythonpython38site-packages. For python3.8.5, this ipykernel or other dependencies version is too low to support it, because python3.8.3 can use kernel well. Here is the solution:
- Turn to the directory, delete file ipykernel or directly empty the folder site-packages.
- Reinstall by
pip install ipykernel, then juypter notebook works perfectly with python3.8.5:
Although working in the global environment is an easy way to get started, that environment will, over time, become cluttered with many different packages that you’ve installed for different projects. So it’s recommended to create a virtual environment for your project. About virtual environments, you can refer to python-venv.
Another possibility for this exact issue is within extensions of VSCode:
- if jupyter extension from Microsoft is disabled (greyed out in extension tab). Then kernel suggestion remains empty even with python env containing
jupyterlab or ipykernel
worth checking as it is easy fix in this case.
I got a issue that can’t run python in VS code, I have already install the python 3.8.5, and VS code python extension, if I switch to the 3.8.5 it shows this kernel is not started, and if I run the codes it will ask me to install the Data Science component and ipykernel, after I install the ipykernel it will switch to empty kernel automatically. Please refer to the screenshot:
Thanks.
I think there is a compatibility issue of jupyter with python 3.8
Try downgrading to python 3.7
When you run pip install ipykernel, the terminal shows ‘Requirement already statisfied’ and it exists in C:userswilliamappdataroamingpythonpython38site-packages. For python3.8.5, this ipykernel or other dependencies version is too low to support it, because python3.8.3 can use kernel well. Here is the solution:
- Turn to the directory, delete file ipykernel or directly empty the folder site-packages.
- Reinstall by
pip install ipykernel, then juypter notebook works perfectly with python3.8.5:
Although working in the global environment is an easy way to get started, that environment will, over time, become cluttered with many different packages that you’ve installed for different projects. So it’s recommended to create a virtual environment for your project. About virtual environments, you can refer to python-venv.
Another possibility for this exact issue is within extensions of VSCode:
- if jupyter extension from Microsoft is disabled (greyed out in extension tab). Then kernel suggestion remains empty even with python env containing
jupyterlaboripykernel
worth checking as it is easy fix in this case.