diff --git a/python/paddle/dataset/uci_housing.py b/python/paddle/dataset/uci_housing.py
index f44b4b8cf09025e5973e82b1c1c181f0a41aa1cf..fbfa477d055eb5f484989eacce38cee8d617d729 100644
--- a/python/paddle/dataset/uci_housing.py
+++ b/python/paddle/dataset/uci_housing.py
@@ -117,8 +117,10 @@ def test():
 
     return reader
 
+
 def fluid_model():
-    parameter_tar = paddle.dataset.common.download(FLUID_URL_MODEL, 'uci_housing', FLUID_MD5_MODEL, 'fit_a_line.fluid.tar')
+    parameter_tar = paddle.dataset.common.download(
+        FLUID_URL_MODEL, 'uci_housing', FLUID_MD5_MODEL, 'fit_a_line.fluid.tar')
 
     tar = tarfile.TarFile(parameter_tar, mode='r')
     dirpath = tempfile.mkdtemp()
@@ -126,6 +128,7 @@ def fluid_model():
 
     return dirpath
 
+
 def predict_reader():
     """
     It returns just one tuple data to do inference.
@@ -135,12 +138,13 @@ def predict_reader():
     """
     global UCI_TEST_DATA
     load_data(paddle.dataset.common.download(URL, 'uci_housing', MD5))
-    return (UCI_TEST_DATA[0][:-1],)
+    return (UCI_TEST_DATA[0][:-1], )
 
 
 def fetch():
     paddle.dataset.common.download(URL, 'uci_housing', MD5)
 
+
 def convert(path):
     """
     Converts dataset to recordio format