From d1ac56757974a2e0710a4b96071184734d97345e Mon Sep 17 00:00:00 2001
From: Xin Pan <panxin.grad@gmail.com>
Date: Wed, 16 Jan 2019 21:11:55 +0800
Subject: [PATCH] fix

test=develop
---
 python/paddle/fluid/layer_helper.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/python/paddle/fluid/layer_helper.py b/python/paddle/fluid/layer_helper.py
index e0fd44ae31e..ea9953f5814 100644
--- a/python/paddle/fluid/layer_helper.py
+++ b/python/paddle/fluid/layer_helper.py
@@ -405,7 +405,8 @@ class LayerHelper(object):
         """
         size = list(input_var.shape[dim_start:dim_end])
         bias_attr = self.bias_attr
-        assert bias_attr is not None
+        if not bias_attr:
+            return input_var
 
         b = self.create_parameter(
             attr=bias_attr, shape=size, dtype=input_var.dtype, is_bias=True)
-- 
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