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				@@ -372,12 +372,14 @@ def video_homepage_recommend(mid, uid, size, app_type, algo_type, client_info, a 
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				             top_K = config_.K 
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				             flow_pool_P = config_.P 
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				         else: 
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				-            exp_item_id_list = [int(item.get('expItemId')) for item in ab_exp_info] 
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				+            exp_item_id_list = [int(item.get('expItemId')) for item in ab_exp_info if item is not None] 
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				             if config_.EXP_ITEM_ID['rec_size'] in exp_item_id_list: 
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				-                config_value = ab_exp_info[exp_item_id_list.index(config_.EXP_ITEM_ID['rec_size'])].get('configValue') 
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				-                size = config_value.get('size', 4) 
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				-                top_K = config_value.get('K', 3) 
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				-                flow_pool_P = config_value.get('P', 0.3) 
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				+                config_value = eval( 
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				+                    ab_exp_info[exp_item_id_list.index(config_.EXP_ITEM_ID['rec_size'])].get('configValue') 
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				+                ) 
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				+                size = int(config_value.get('size', 4)) 
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				+                top_K = int(config_value.get('K', 3)) 
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				+                flow_pool_P = float(config_value.get('P', 0.3)) 
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				             else: 
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				                 size = size 
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				                 top_K = config_.K 
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				@@ -415,12 +417,12 @@ def video_relevant_recommend(video_id, mid, uid, size, app_type, ab_exp_info): 
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				         top_K = config_.K 
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				         flow_pool_P = config_.P 
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				     else: 
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				-        exp_item_id_list = [int(item.get('expItemId')) for item in ab_exp_info] 
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				+        exp_item_id_list = [int(item.get('expItemId')) for item in ab_exp_info if item is not None] 
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				         if config_.EXP_ITEM_ID['rec_size'] in exp_item_id_list: 
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				-            config_value = ab_exp_info[exp_item_id_list.index(config_.EXP_ITEM_ID['rec_size'])].get('configValue') 
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				-            size = config_value.get('size', 4) 
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				-            top_K = config_value.get('K', 3) 
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				-            flow_pool_P = config_value.get('P', 0.3) 
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				+            config_value = eval(ab_exp_info[exp_item_id_list.index(config_.EXP_ITEM_ID['rec_size'])].get('configValue')) 
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				+            size = int(config_value.get('size', 4)) 
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				+            top_K = int(config_value.get('K', 3)) 
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				+            flow_pool_P = float(config_value.get('P', 0.3)) 
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				         else: 
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				             size = size 
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				             top_K = config_.K 
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