modify

linucb/views/collect_data.py

@@ -130,6 +130,7 @@ class CollectData(object):
                                     exposure_topic_id = item["card_id"]
                                     logging.info(
                                         "consume exposure topic_id:%s,device_id:%s" % (str(exposure_topic_id), str(device_id)))
+                                    if exposure_topic_id:
                                         exposure_topic_id_list.append(exposure_topic_id)
 
                                 topic_tag_id_dict = dict()