How do I change which Python is used?

My apologies if this is not specific to Jupyterlab App.

in a notebook within Jupyterlab App, when I run:

import sys
sys.executable

it returns '/usr/bin/python3'

I would like it to return '/usr/local/anaconda3/bin/python'

How do I specify which python Jupyterlab App uses?

Thank you!

[sbliven]

This is a pretty important feature. I need to access kernels from my system miniconda installation. Currently (at least on MacOS) I don’t see any options to import these, since the installer creates its own conda installation.

[sbliven]

I got jupyterlab.app to recognize my existing jupyter environments! As @westurner mentioned, this requires installing nb_conda_kernels to the jupyterlab base environment. However, it’s a bit tricky on macOS since that environment is installed as root by default. I ran the following commands in a terminal:

source /Applications/JupyterLab.app/Contents/Resources/jlab_server/bin/activate
conda info  #ensure the right environment is loaded
sudo conda install nb_conda nb_conda_kernels

After restarting jupyter all conda environments were available as kernels.