fix

search/views/topic.py

@@ -281,7 +281,7 @@ def query_topic_by_user_similarity(topic_similarity_score_dict, offset=0, size=1
         must_topic_id_list = topic_similarity_score_dict.keys()
         topic_id_dict = TopicUtils.get_recommend_topic_ids(user_id=-1, offset=offset, size=size,must_topic_id_list=must_topic_id_list)
 
-        recommend_topic_ids = topic_id_dict.keys()
+        recommend_topic_ids = list(topic_id_dict.keys())
         return {"recommend_topic_ids":recommend_topic_ids}
     except:
         logging.error("catch exception,err_msg:%s" % traceback.format_exc())