Question: When is __call__ called if Manager receives a function

[adamcunnington]

I'm assuming that because you need manage to be global in order to take advantage of the decorator, you have deliberately allowed Manager to receive either the app instance or a callable.

I have a func, app_factory that creates the app but I wanted to know when it is actually called, I checked the source code but couldn't work out where. Perhaps run is responsible for the calling of the app func?