I recommend avoiding the version of python that comes preinstalled on macOS for the following reasons:
- It is not the latest version
- Older releases of macOS do not have python3
- Adding packages / libraries may break system functionality
- Separation of development vs. system
One of the easiest ways to install and manage the latest version of python3, and other software, is to use the Homebrew package manager.
/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install.sh)"
brew install python3
Validate python3 is working:
jemurray@jasons-mbp ~ % /usr/local/bin/python3 Python 3.7.7 (default, Mar 10 2020, 15:43:33) [Clang 11.0.0 (clang-1220.127.116.11)] on darwin Type "help", "copyright", "credits" or "license" for more information. >>> print("Hello world!") Hello world! >>>