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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 errors(self):
 """ Returns the list of recent errors. Returns: list: of :obj:`.ErrorEvent` tuples. """

        ret_errs = list()
        errors = self.get('error').get('errors', None) or list()
        assert isinstance(errors, list)
        for err in errors:
            when = parse_datetime(err.get('when', None))
            msg = err.get('message', '')
            e = ErrorEvent(when, msg)
            ret_errs.append(e)
        return ret_errs