diff --git a/fluid/text_classification/nets.py b/fluid/text_classification/nets.py
index 9aa0dc332bd5544752f5ea4bf1969fe6ce194051..a21742d22d0bd1676c8c5874899af746b5225636 100644
--- a/fluid/text_classification/nets.py
+++ b/fluid/text_classification/nets.py
@@ -5,6 +5,7 @@ import numpy as np
 import paddle.fluid as fluid
 import paddle.v2 as paddle
 
+
 def bow_net(data,
             label,
             dict_dim,