Uninstall Python from macOS

Remove the Python 3.8 applications directory
$ sudo rm -rf "/Applications/Python 3.8”

Remove the third-party Python 3.8 framework

$ sudo rm -rf /Library/Frameworks/Python.framework/Versions/3.8

Remove the symbolic links, in /usr/local/bin, that point to this Python version. See them using
$ ls -l /usr/local/bin | grep '../Library/Frameworks/Python.framework/Versions/3.8’

and then run the following command to remove all the links:
$ cd /usr/local/bin/
$ ls -l /usr/local/bin | grep '../Library/Frameworks/Python.framework/Versions/3.8’ | awk '{print $9}' | tr -d @ | xargs rm

Edit your shell profile file(s) to remove /Library/Frameworks/Python.framework/Versions/3.8 to your PATH environment file. Depending on which shell you use, any of the following files may have been modified: ~/.bash_login, ~/.bash_profile, ~/.cshrc, ~/.profile, ~/.tcshrc, and/or ~/.zprofile.

$vim ~/.bash_profile

Resources:

https://stackoverflow.com/questions/3819449/how-to-uninstall-python-2-7-on-a-mac-os-x-10-6-4/