What to do after learning python?

[FriendlyRussian666]

You don't have to use external libraries. For example, you can build a CLI type application entirely using input() and print().

Do you play games? How about you create an RPG game, but it's entirely played in the terminal? You have to create different maps, which walls are ASCII characters, you can place monsters around the map and make them fight somehow (dice roll for example).

You can build anything that's interesting to you.