Sometimes you need a particular version of python, in this guide we will go over how to install python 3.8 on Ubuntu or any other specific version of Python on Ununtu.
First install the prerequisites
sudo apt update
sudo apt install software-properties-common
Add the official source for python to your sources list
sudo add-apt-repository ppa:deadsnakes/ppa
Run the python 3.8 install command
sudo apt install python3.8
Verify python 3.8 is installed
python3.8 --version