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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 events(self):
 """ Return all events """

        all_events = [{ensure_unicode(key): value for key, value in iteritems(ev)} for ev in self._events]

        for ev in all_events:
            to_decode = []
            for key, value in iteritems(ev):
                if isinstance(value, binary_type) and key != 'host':
                    to_decode.append(key)
            for key in to_decode:
                ev[key] = ensure_unicode(ev[key])

            if ev.get('tags'):
                ev['tags'] = normalize_tags(ev['tags'])

        return all_events