Kernels

To add existing environment as a jupyter kernel:

List kernels

jupyter kernelspec list

Remove kernel

jupyter kernelspec remove <kernel-name>  

Install new kernel

ipython kernel install --name <local-venv> --user

is_jupyter = get_ipython().__class__.__name__ == 'ZMQInteractiveShell'
is_jupyter

True

Paths

Custom path for VSCode Jupyter notebook

Go to global VSCode settings (Cmd + ,) and search for Jupyter Notebook File Root, then set it to any path you like to be imported by default.

Custom path for Jupyter Notebook in a browser

Go to kernel.json file:

jupyter kernelspec list
cd ~/.local/share/jupyter/kernels/mykernel/

add PYTHONPATH environmental variable in the env section:

{
"argv": [
    "/path/to/custom/python",
    "-m",
    "ipykernel_launcher",
    "-f",
    "{connection_file}"
],
"env": {
    "PYTHONPATH": "/path/to/custom/path"
},

Note PYTHONPATH has nothing to do with the path to the python file set in argv.

Global path

To add a global path to all kernels we can use ipython_config.py file:

ipython profile create
ipython locate

/Users/username/.ipython

vi /Users/username/.ipython/profile_default/ipython_config.py

add these lines (use i to enter insert mode and Esc to exit, save and quit as :wq:

c.InteractiveShellApp.exec_lines = [
    'import sys; sys.path.append("/path/to/your/module")'
]

Manual path

One can always get the current folder in the notebook a = os.path.abspath('') and then manipulate it. Manually setting up some ENV path variable is also an option. Magic command for environemtal variables:

%env

Change the default kernel

jupyter notebook --generate-config

In jupyter config file modify and uncomment following line: c.MultiKernelManager.default_kernel_name='newDefault' \n"