How to fix: zsh: command not found: jupyter

% jupyter

zsh: command not found: jupyter

The most common reason for this error is Jupyter Notebook has not been installed on your Mac, you can do that by the below command,

pip3 install notebook

If you think Jupyter has been installed

The first thing you do is make sure where is Jupyter Notebook has been installed on your Mac.

 % pip3 show notebook
Name: notebook
Version: 6.5.4
Summary: A web-based notebook environment for interactive computing
Home-page: http://jupyter.org
Author: Jupyter Development Team
Author-email: jupyter@googlegroups.com
License: BSD
Location: /Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages
Requires: argon2-cffi, ipykernel, ipython-genutils, jinja2, jupyter-client, jupyter-core, nbclassic, nbconvert, nbformat, nest-asyncio, prometheus-client, pyzmq, Send2Trash, terminado, tornado, traitlets
Required-by: 

If you get a warning that the package is not found, you can also try the whereis or which command.

% whereis jupyter

jupyter: /Library/Frameworks/Python.framework/Versions/3.11/bin/jupyter

% which jupyter

/Library/Frameworks/Python.framework/Versions/3.11/bin/jupyter

So in my case, I have to make sure that the PATH "/Library/Frameworks/Python.framework/Versions/3.11/bin/" is available in the $PATH variable.

export PATH="/Library/Frameworks/Python.framework/Python/3.x/bin:$PATH"