diff --git a/kagle/kagle_dataset.py b/kagle/kagle_dataset.py
index 875921387a897f227d63be522fa6bcc3529b6ae5..c9800f2f651ce26af5d7b7979c91d071319b69b5 100755
--- a/kagle/kagle_dataset.py
+++ b/kagle/kagle_dataset.py
@@ -1,15 +1,15 @@
 """
 Define Dataset
 """
+import abc
 import copy
 import yaml
 import time
 import datetime
-import kagle.kagle_fs
-import kagle.kagle_util
-import kagle.kagle_layer
 import paddle.fluid as fluid
-import abc
+import kagle.kagle_fs as kagle_fs
+import kagle.kagle_util as kagle_util
+import kagle.kagle_layer as kagle_layer
 
 class Dataset(object):
     """
diff --git a/kagle/kagle_metric.py b/kagle/kagle_metric.py
index 26c85c0484edba02396dc408ba218785cbb439bb..a0e66cfb5278ac626b7e0cc0c0b4878b880064f8 100755
--- a/kagle/kagle_metric.py
+++ b/kagle/kagle_metric.py
@@ -1,11 +1,12 @@
 """
 Do metric jobs. calculate AUC, MSE, COCP ...
 """
+import abc
 import math
 import time
 import numpy as np
-import kagle.kagle_util
 import paddle.fluid as fluid
+import kagle.kagle_util as kagle_util
 from paddle.fluid.incubate.fleet.parameter_server.pslib import fleet
 
 class Metric(object):
diff --git a/kagle/kagle_model.py b/kagle/kagle_model.py
index 7a695fc7454230db019cff57ec9b54f2ea20459e..52a160ab6e4e9289cb9f2e3d739279e10e2c1896 100755
--- a/kagle/kagle_model.py
+++ b/kagle/kagle_model.py
@@ -4,9 +4,9 @@ Model Net: analyse layer config, and parse to Paddle Pragram
 import abc
 import copy
 import yaml
-import kagle.kagle_layer
-import kagle.kagle_table
-import paddle.fluid as fluid
+import paddle.fluid as fluid 
+import kagle.kagle_layer as kagle_layer
+import kagle.kagle_table as kagle_table
 from paddle.fluid.incubate.fleet.parameter_server.pslib import fleet
 
 def create(config):
diff --git a/kagle/kagle_util.py b/kagle/kagle_util.py
index de26d0569136ec0fb7cc30ef53d1519184cf14a0..3e7a99e87268966e9c69ce41eb8d1806831b4616 100755
--- a/kagle/kagle_util.py
+++ b/kagle/kagle_util.py
@@ -5,8 +5,8 @@ import os
 import sys
 import time
 import datetime
-import kagle.kagle_fs
 import numpy as np
+import kagle.kagle_fs as kagle_fs
 from paddle.fluid.incubate.fleet.parameter_server.pslib import fleet
 
 def get_env_value(env_name):
diff --git a/kagle/trainer/abacus_trainer.py b/kagle/trainer/abacus_trainer.py
index be1594ef96545170ce49654039d9c664ef4a397d..c9218dc7acdae8fcce78892fb82152027d92a0f0 100755
--- a/kagle/trainer/abacus_trainer.py
+++ b/kagle/trainer/abacus_trainer.py
@@ -8,13 +8,13 @@ import yaml
 import time
 import json
 import datetime
-import kagle.kagle_fs
-import kagle.kagle_util
-import kagle.kagle_model
-import kagle.kagle_metric
-import kagle.kagle_dataset
-import kagle.trainer.kagle_trainer
 import paddle.fluid as fluid
+import kagle.kagle_fs as kagle_fs
+import kagle.kagle_util as kagle_util
+import kagle.kagle_model as kagle_model
+import kagle.kagle_metric as kagle_metric
+import kagle.kagle_dataset as kagle_dataset
+import kagle.trainer.kagle_trainer as kagle_trainer
 from paddle.fluid.incubate.fleet.parameter_server.pslib import fleet
 
 class AbacusPaddleTrainer(kagle_trainer.Trainer):