There are a few ways to install Python in Mac.

1. Install system-wide via the official Python installation package.

2. Install a Anaconda Python distribution locally.

3. Install locally using Homebrew (recommended).

A few comments about different ways of installation.

1. Avoid installing multiple versions of Python in your system. It usually brings more troubles than conveniences. Docker is usually a much better option when you need different versions of Python.

2. Anaconda and Homebrew installs Python locally rather than system-wide. You have to install Python using an official installation package manually (downloading the installation package and double click to install) if you need a system-wide installation.

3. The recommended way to install Python on Mac is to use Homebrew. However, there are limited choices of Python versions in Homebrew. Go with Anaconda Python if you cannot find the version you need in Homebrew.

References

• How can I install a previous version of Python 3 in macOS using homebrew?

• How Can I Properly Uninstall Python from Mac (Solved)