Not every programmer likes creating GUI code. Most hacker types don’t mind a command line interface, but very few ordinary users appreciate them. However, if you write command line programs i… ...

Unfortunately, Micropython has historically lacked a decent high-level GUI library. Thankfully, that’s no longer the case, with [amirgon] porting LittlevGL to the platform.

From simple timers and benchmarking modules to sophisticated stats-based frameworks, look to these tools for insight into the performance of your Python program.

The code that handles the image list doesn't access or interact with the GUI at all. It simply keeps a single list variable in the correct state, safe in the knowledge that Tcl/Tk does the rest.