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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_all_events(self):
 """Gather all event IDs in the REACH output by type. These IDs are stored in the self.all_events dict. """

        self.all_events = {}
        events = self.tree.execute("$.events.frames")
        if events is None:
            return
        for e in events:
            event_type = e.get('type')
            frame_id = e.get('frame_id')
            try:
                self.all_events[event_type].append(frame_id)
            except KeyError:
                self.all_events[event_type] = [frame_id]