Google Colabo
Open Notebooks Locally With "Python -m Notebook"
Just call "notebook" with the -m command.
python -m notebook
Installing A Python3 Kernel
python3 -m pip install ipykernel
Note: you may need to use sudo with the above command!
You can check the local (ie. successful installation) of the python3 kernel with this command:
sudo python3 -m ipykernel install --user