From 6e13ff3068dfafa9f0be027c43c8355e7b90f275 Mon Sep 17 00:00:00 2001
From: gaotingquan <gaotingquan@baidu.com>
Date: Thu, 30 Dec 2021 07:46:03 +0000
Subject: [PATCH] fix: use hasattr() to check if collate_fn is in dataloader

fix bug caused by PR #1596
---
 ppcls/engine/engine.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ppcls/engine/engine.py b/ppcls/engine/engine.py
index 115eab24..21897e3a 100644
--- a/ppcls/engine/engine.py
+++ b/ppcls/engine/engine.py
@@ -161,7 +161,7 @@ class Engine(object):
             if metric_config is not None:
                 metric_config = metric_config.get("Train")
                 if metric_config is not None:
-                    if self.train_dataloader.collate_fn:
+                    if hasattr(self.train_dataloader, "collate_fn"):
                         for m_idx, m in enumerate(metric_config):
                             if "TopkAcc" in m:
                                 msg = f"'TopkAcc' metric can not be used when setting 'batch_transform_ops' in config. The 'TopkAcc' metric has been removed."
-- 
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