修复test_loader函数不可用的问题

tools/train.py

@@ -88,20 +88,23 @@ def main(config, device, logger, vdl_writer):
                   best_model_dict, logger, vdl_writer)
 
 
-def test_reader(config, place, logger):
-    train_loader = build_dataloader(config['TRAIN'], place)
+def test_reader(config, place, logger, global_config):
+    train_loader, _ = build_dataloader(
+        config['TRAIN'], place, global_config=global_config)
     import time
     starttime = time.time()
     count = 0
     try:
-        for data in train_loader():
+        for data in train_loader:
             count += 1
             if count % 1 == 0:
                 batch_time = time.time() - starttime
                 starttime = time.time()
-                logger.info("reader: {}, {}, {}".format(count,
-                                                        len(data), batch_time))
+                logger.info("reader: {}, {}, {}".format(
+                    count, len(data[0]), batch_time))
     except Exception as e:
+        import traceback
+        traceback.print_exc()
         logger.info(e)
     logger.info("finish reader: {}, Success!".format(count))
 
@@ -130,7 +133,7 @@ def dis_main():
                                                             device))
 
     main(config, device, logger, vdl_writer)
-    # test_reader(config, place, logger)
+    # test_reader(config, device, logger, config['Global'])
 
 
 if __name__ == '__main__':