Asyncio is for cooperative multitasking. I/O is the most common use case but it's not the only one. They're using the event loop to schedule their GUI tasks. T

Asyncio is for cooperative multitasking. I/O is the most common use case but it's not the only one. They're using the event loop to schedule their GUI tasks. Textual is a framework for building desktop apps. I assume the message queues are in-memory structures used to pass messages between tasks, hence no I/O. This is really fairly standard stuff. I understand you may not be familiar with GUI software and/or the Python ecosystem but jumping straight to condescension when you don't understand something is not really a good attitude.