diff --git a/fluid/DeepASR/data_utils/augmentor/tests/test_data_trans.py b/fluid/DeepASR/data_utils/augmentor/tests/test_data_trans.py
index b1d45a39afdb8792f980dfa987e70e77155aebc5..157ab02eee0093fe5d683e642b3d18d842cb4e19 100644
--- a/fluid/DeepASR/data_utils/augmentor/tests/test_data_trans.py
+++ b/fluid/DeepASR/data_utils/augmentor/tests/test_data_trans.py
@@ -1,6 +1,7 @@
 from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
 
-#by zhxfl 2018.01.31
 import sys
 import unittest
 import numpy as np
diff --git a/fluid/DeepASR/data_utils/augmentor/trans_add_delta.py b/fluid/DeepASR/data_utils/augmentor/trans_add_delta.py
index 9cb62ce898a3ee00bb062de6fafdcc0b33fb59b4..dc1a4fa45be38152eba773c35e67d0ad3e4a13cb 100644
--- a/fluid/DeepASR/data_utils/augmentor/trans_add_delta.py
+++ b/fluid/DeepASR/data_utils/augmentor/trans_add_delta.py
@@ -1,3 +1,7 @@
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+
 import numpy as np
 import math
 import copy
diff --git a/fluid/DeepASR/data_utils/augmentor/trans_mean_variance_norm.py b/fluid/DeepASR/data_utils/augmentor/trans_mean_variance_norm.py
index e3336531935ddb11e742bbf99d0240c43b91def6..5b541d426c61364639f7a9d9f50bd51a2c06efa5 100644
--- a/fluid/DeepASR/data_utils/augmentor/trans_mean_variance_norm.py
+++ b/fluid/DeepASR/data_utils/augmentor/trans_mean_variance_norm.py
@@ -1,3 +1,7 @@
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+
 import numpy as np
 import math
 
diff --git a/fluid/DeepASR/data_utils/augmentor/trans_splice.py b/fluid/DeepASR/data_utils/augmentor/trans_splice.py
index 4cebe2c163085fbcbbd5184b59c8f3f1072202a3..94f5258de316045d41999b26c6963f8487e9c55a 100644
--- a/fluid/DeepASR/data_utils/augmentor/trans_splice.py
+++ b/fluid/DeepASR/data_utils/augmentor/trans_splice.py
@@ -1,3 +1,7 @@
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+
 import numpy as np
 import math
 
diff --git a/fluid/DeepASR/data_utils/data_read.py b/fluid/DeepASR/data_utils/data_reader.py
similarity index 98%
rename from fluid/DeepASR/data_utils/data_read.py
rename to fluid/DeepASR/data_utils/data_reader.py
index 51fec070ae942cfb24314c9156a9473e98671032..69620629fc97aa03738c5da365badc10936e9ffe 100644
--- a/fluid/DeepASR/data_utils/data_read.py
+++ b/fluid/DeepASR/data_utils/data_reader.py
@@ -4,6 +4,10 @@
    Todos:
         1. multiprocess read block from disk
 """
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+
 import random
 import Queue
 import numpy as np
@@ -214,7 +218,6 @@ class DataRead(object):
         for (nidx, sample) in enumerate(lsample):
             for trans in self._ltrans:
                 sample = trans.perform_trans(sample)
-            #print nidx
             lsample[nidx] = sample
 
         return lsample
@@ -234,7 +237,6 @@ class DataRead(object):
         for (nidx, sample) in enumerate(lsample):
             for trans in self._ltrans:
                 sample = trans.perform_trans(sample)
-            #print nidx
             lsample[nidx] = sample
 
         return lsample
diff --git a/fluid/DeepASR/data_utils/util.py b/fluid/DeepASR/data_utils/util.py
index a09a7dea062743b958ebb65a740555c0c41852d0..84de41c8ad8bcefaf1e70df1f347d1624075cf3e 100644
--- a/fluid/DeepASR/data_utils/util.py
+++ b/fluid/DeepASR/data_utils/util.py
@@ -1,3 +1,8 @@
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+
+
 def to_lodtensor(data, place):
     """convert tensor to lodtensor
     """
diff --git a/fluid/DeepASR/stacked_dynamic_lstm.py b/fluid/DeepASR/stacked_dynamic_lstm.py
index 4218f0458965aac12196b0f71421e239576bd2c5..51ba7a6bf3717309c98b3d870b917933c1ef4721 100644
--- a/fluid/DeepASR/stacked_dynamic_lstm.py
+++ b/fluid/DeepASR/stacked_dynamic_lstm.py
@@ -12,7 +12,7 @@ import paddle.v2.fluid.profiler as profiler
 import data_utils.trans_mean_variance_norm as trans_mean_variance_norm
 import data_utils.trans_add_delta as trans_add_delta
 import data_utils.trans_splice as trans_splice
-import data_utils.data_read as reader
+import data_utils.data_reader as reader
 
 
 def parse_args():