Merge branch 'hk_now' into 'test'

update

See merge request alpha/physical!341

search/views/topic.py

@@ -95,6 +95,7 @@ def get_home_recommend_topic_ids(user_id, device_id, tag_id, offset, size, query
             topic_recommend_redis_key = "physical:linucb:topic_recommend:device_id:" + str(device_id)
 
             recommend_topic_dict = redis_client.hgetall(topic_recommend_redis_key)
+            linucb_recommend_topic_id_list = list()
             if b"data" in recommend_topic_dict:
                 linucb_recommend_topic_id_list = json.loads(recommend_topic_dict[b"data"])