fix position duplicate

recommend.py

@@ -55,7 +55,6 @@ def video_position_recommend(mid, uid, app_type, videos):
 
     return videos[:10]
 
-
 def positon_duplicate(pos1_vids, pos2_vids, videos):
     s = set()
     if pos1_vids is not None and len(pos1_vids) >0:
@@ -64,12 +63,12 @@ def positon_duplicate(pos1_vids, pos2_vids, videos):
         s.add(int(pos2_vids[0]))
 
     l = []
-    for i in range(len(videos)):
-        if videos[i]['videoId'] in s:
-            l.append(i)
-    for i in l:
-        videos.pop(i)
-    return videos
+    for item in videos:
+        if item['videoId'] in s:
+            continue
+        else:
+            l.append(item)
+    return l
 
 def video_recommend(mid, uid, size, app_type, algo_type, client_info):
     """