how to keep python interpreter busy in ableton

gistfile1.py

    def pause(self):
        # helper for rconsole. This blocks ableton inside python on purpose, otherwise the console thread
        # is super slow ( python interpreter is only active when needed )

        def lock():
            if self.console_event.isSet():
                return
            # this trick works with Event and not with just time.sleep, because in python2 Event.wait is a loop+sleep, which keeps the interpreter busy
            self.console_event.wait(0.1)
            self.schedule_message(3, lock)

        self.console_event.clear() # console_event is a threading.Event object
        self.schedule_message(3, lock)