How to install Python 3.10 by default on Linux?

Question

ubuntu

How to install Python3.10 by default, now the system has Python3.8.10 by default?

Answer 1

Install using the asdf version control utility .
Just do not install globally, otherwise different components of the OS will break.
It's better to install locally to, say, the directory of all your Python projects.
Added
Beforehand, you need to add the python plugin to asdf.

Answer 2

In the most unfavorable case - to collect from source codes. On Ubuntu 20.4 sudo apt install python3.10 (after some preliminary steps). But there is still so much garbage crawling together that then only work in a virtual environment.