How to list all installed Jupyter kernels?

Question

Listing all the available environments is as simple as:

$ conda env list

Now how does one list the currently installed kernels, without having to go to the path:

$ ls /home/{{user}}/.local/share/jupyter/kernels/

Answer 1

With Jupyter installed you get the list of currently installed kernels with:

$ jupyter kernelspec list

python2     /usr/local/lib/python2.7/dist-packages/ipykernel/resources
testenv     /home/{{user}}/.local/share/jupyter/kernels/sparkenv

Answer 2

For those that come here because VSCode can't find the kernel although it is shown when using jupyter kernelspec list, try updating pyzmq.

pip install pyzmq --upgrade

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Based on this answer