If you are on Windows follow WSL 2 installation guide first.
Add dead snakes PPA, this is a special DEB repository that holds all python versions. Compatible with all Debian bases repositories: Ubuntu, Mint, WSL2 Ubuntu
|sudo apt update|
|sudo apt install software-properties-common|
|sudo add-apt-repository ppa:deadsnakes/ppa|
Now type the next command to install the main python DEB package of a specific version:
sudo apt install python3.7
Instead of 3.7 use any version you need.
For some specific projects and packages you might also need other DEB packages:
python#.#-dev: includes development headers for building C extensions
python#.#-venv: provides the standard library
python#.#-distutils: provides the standard library
python#.#-lib2to3: provides the
2to3-#.#utility as well as the standard