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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_public_trades(self, time_frame='hour'):
 """Return public trades that were completed recently. :param time_frame: Time frame. Allowed values are "minute" for trades in the last minute, or "hour" for trades in the last hour (default: "hour"). :type time_frame: str | unicode :return: Public trades completed recently. :rtype: [dict] """

        self._log('get public trades')
        return self._rest_client.get(
            endpoint='/transactions',
            params={'book': self.name, 'time': time_frame}
        )