fix bmn metric

examples/bmn/bmn_metric.py

@@ -39,11 +39,6 @@ class BmnMetric(Metric):
         elif self.mode == 'infer':
             self.get_infer_dataset_dict()
 
-    def add_metric_op(self, preds, label):
-        pred_bm, pred_start, pred_en = preds
-        video_index = label[-1]
-        return [pred_bm, pred_start, pred_en, video_index]  #return list
-
     def update(self, pred_bm, pred_start, pred_end, fid):
         # generate proposals
         pred_start = pred_start[0]

hapi/model.py

@@ -67,7 +67,7 @@ def to_list(value):
     if value is None:
         return value
     if isinstance(value, (list, tuple)):
-        return value
+        return list(value)
     return [value]