I ran two times into the same Problem. I execute the command apt remove python, then the system crashes and i run into following problem: "dev/sda1: clean, ..." This message appears after I startup my laptop, then it won't continue booting
reinstalling video driver and i get back into my system with all the basic applications like firefox, terminal/shell (ctrl + alt + t doesn't work as well) missing. They are still installed tho. the Terminal for example works in my IDE and if i reinstall firefox it says it doesn't have to install anything. It just creates a link.