I have downloaded and extracted 4digits-1.1.4. Where do I go from here? In Ubuntu 19.10, I got it running and of course, I don't remember how. When I updated it was gone. In 20.04 I have not been able to do it again. It's my favorite game. Please help.
https://launchpad.net/ubuntu/+source/4digits/1.1.4-1build1 shows it is not yet supported for 20.04 'Focal Fossa'. If it's essential, you can step back to version 18.04.4 where it is available, and wait until it is ported to the new release, or contact the developer directly to ask why.
Python is usually already installed in your computer if your are a using a modern Linux distribution. You can install python-gtk2 and python-glade2 from the software repository of your distribution. BSD's and Unix's
Install python, python-gtk2 and python-glade2 for your system.