How to make Mac OS use the python installed by Homebrew

brew install python or brew info python output mentions:

Unversioned symlinks python, python-config, pip etc. pointing to
python3, python3-config, pip3 etc., respectively, have been installed into
/opt/homebrew/opt/python@3.9/libexec/bin

So running

% echo 'export PATH=/opt/homebrew/opt/python@3.9/libexec/bin:$PATH' >> ~/.zprofile
% source ~/.zprofile
# For bash use ~/.bash_profile.

gets you those symlinks created by Homebrew – python=python3, pip=pip3 etc

% python --version
Python 3.9.10
% pip --version
pip 21.3.1 from /opt/homebrew/lib/python3.9/site-packages/pip (python 3.9)