Using PYENV:
https://realpython.com/intro-to-pyenv/

brew install openssl readline sqlite3 xz zlib
pyenv install --list |grep " 3\.[678]"

Using Virtual ENV (not prefered):
https://packaging.python.org/guides/installing-using-pip-and-virtual-environments/

python -m venv .venv #Create venv
source ~/env/bin/activate #Activate
deactivate #Deactivate

python -m venv .venv
source .venv/bin/activate
pip install --upgrade pip

python3 -m pip install matplotlib
pip3 freeze > requirements.txt
pip3 install -r requirements.txt

py -3 -m venv .venv
.venv\scripts\activate

• https://docs.python-guide.org/writing/structure/
• https://pycon.switowski.com
• https://github.com/audreyfeldroy/cookiecutter-pypackage
• https://python-adv-web-apps.readthedocs.io/en/latest/index.html