From 210af73c6ee95de88997df3de5111ec0748106e6 Mon Sep 17 00:00:00 2001
From: yh <poemsmileyh@gmail.com>
Date: Thu, 25 Jul 2019 16:01:17 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E5=A4=8Dcallback=E8=BF=9E=E7=BB=AD?=
 =?UTF-8?q?=E4=B8=A4=E6=AC=A1=E5=8A=A0=E5=85=A5=E7=9A=84bug?=
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---
 fastNLP/core/callback.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fastNLP/core/callback.py b/fastNLP/core/callback.py
index 14803e56..07ca70dc 100644
--- a/fastNLP/core/callback.py
+++ b/fastNLP/core/callback.py
@@ -324,7 +324,7 @@ class CallbackManager(Callback):
         self._env = env
         self.callbacks = []
         if callbacks:
-            self.callbacks += self.prepare_callbacks(callbacks)
+            self.prepare_callbacks(callbacks)
 
     def prepare_callbacks(self, callbacks):
         if not callbacks: