pip install setuptools

pip3 install setuptools
Defaulting to user installation because normal site-packages is not writeable
Requirement already satisfied: setuptools in 
/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.8/lib/python3.8/site-packages (49.2.1)

See also

• PIP: [pipx, pip, pip3 | install | install --upgrade | list | show | uninstall | search | install cryptography | --version | help, PIP changelog, pipdeptree, install -r requirements.txt]
• Python, PIP, GIL, Flask, Django, Marshmallow, def, logging, Pandas, Numpy, AWS Chalice, import, from, tuple, list, Python exceptions, virtualenv, .append, pytz, TZ, print, python3 -c, os, PEP, Python Institute, Methods: Dunder methods, Flake8, Python collections, Function decorators in Python, Click python library, Python module, Flower, kwargs, Black (Python), Python list structure, Mypy, variables, Casting, try:, pydoc, argparse, Anaconda, pyenv, setup.py, python3 --version, python3 --help, Data Classes, raise