Message 413820 - Python tracker (original) (raw)

To make this cleanly interact with timeout, TaskGroup etc., the CancelOnEvent class should have a "did-I-cancel" flag which is set in the _cancel_on_event() callback. Then if that flag is set it should call .uncancel(), and if that returns a value > 0, it should bubble the CancelledError out; otherwise it can raise EventRaised (if the condition is set).