pyNotepad was one of my first projects that used a GUI in any capacity, and although it’s rough and frankly a little bare-bones, approaching useless in its utility, it’s still one of my most favorite little projects.

It’s built using pure Python and tkinter, one of the nicest little GUI toolkits I’ve ever used.
Supports loading and saving of pretty much any plain text file format, but due to not having worked on it for some time or for very long, it lacks some basic features.
If you use it, be sure to save often, and especially before closing it.
Downloads (Windows)