Make Tech Easier published a tutorial about installing and manage Python versions in Linux.

How to Install and Manage Python Versions in Linux

The Python programming language was introduced in 1991. In all these years, it has gone through many changes, with each version adding and removing various features. Due to these changes, software written in newer versions of Python may or may not work with older versions. This version mismatch costs developer experience and productivity, so it’s important to learn how to manage Python versions installed on your computer to run them all efficiently. This tutorial shows you how to do that. 

How to Install and Manage Python Versions in Linux