If you quickly want to get the latest version of Python installed on Ubuntu and get future updates automatically, then you can install it from the below third-party PPA repository…
To do that, run the commands below to add the PPA.
First install Ubuntu software properties package if it’s not already installed on your system..
sudo apt update sudo apt install software-properties-common
After that run the commands to add the PPA..
sudo add-apt-repository ppa:deadsnakes/ppa
Finally, run the commands below to install Python 3.7
sudo apt update sudo apt install python3.7