[michael_j_x]

I am not sure I agree that the GUI is a good use case for async. A human interaction with the program must almost always pre-empt whatever the program was running, so I can not see how a cooperative multi-threading runtime like async Python can work in such a scenario.

[harpiaharpyja]

Well it does work so "it can't work" isn't a very substantial criticism.

Is there some nuance or detail that you meant to include?