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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 set_topic_attributes(self, topic, attr_name, attr_value):
 """ Get attributes of a Topic :type topic: string :param topic: The ARN of the topic. :type attr_name: string :param attr_name: The name of the attribute you want to set. Only a subset of the topic's attributes are mutable. Valid values: Policy | DisplayName :type attr_value: string :param attr_value: The new value for the attribute. """

        params = {'ContentType' : 'JSON',
                  'TopicArn' : topic,
                  'AttributeName' : attr_name,
                  'AttributeValue' : attr_value}
        response = self.make_request('SetTopicAttributes', params, '/', 'GET')
        body = response.read()
        if response.status == 200:
            return json.loads(body)
        else:
            boto.log.error('%s %s' % (response.status, response.reason))
            boto.log.error('%s' % body)
            raise self.ResponseError(response.status, response.reason, body)