diff --git a/tools/accnn/rank_selection.py b/tools/accnn/rank_selection.py
index 3011c80e624d..c5c026114aeb 100644
--- a/tools/accnn/rank_selection.py
+++ b/tools/accnn/rank_selection.py
@@ -16,14 +16,12 @@
 # under the License.
 
 import numpy as np
+import mxnet as mx
 import json
 import utils
 import math
 import sys
 
-from mxnet.base import xrange
-
-
 def calc_complexity(ishape, node):
   y, x = map(int, eval(node['param']['kernel']))
   N = int(node['param']['num_filter'])
diff --git a/tools/accnn/utils.py b/tools/accnn/utils.py
index 56da766d020d..b19521f9e860 100644
--- a/tools/accnn/utils.py
+++ b/tools/accnn/utils.py
@@ -21,8 +21,6 @@
 import json
 import ast
 
-from mxnet.base import xrange
-
 
 def load_model(args):
   devs = mx.cpu() if args.gpus == None else [mx.gpu(int(i)) for i in args.gpus.split(',')]
diff --git a/tools/caffe_converter/convert_symbol.py b/tools/caffe_converter/convert_symbol.py
index 8faef04fe215..bbbdaa44e314 100644
--- a/tools/caffe_converter/convert_symbol.py
+++ b/tools/caffe_converter/convert_symbol.py
@@ -20,10 +20,8 @@
 from __future__ import print_function
 import argparse
 import re
-import mxnet as mx
 import caffe_parser
 
-
 def _get_input(proto):
     """Get input size
     """
diff --git a/tools/coreml/test/test_mxnet_image.py b/tools/coreml/test/test_mxnet_image.py
index 18d1fc47c842..e373caeba932 100644
--- a/tools/coreml/test/test_mxnet_image.py
+++ b/tools/coreml/test/test_mxnet_image.py
@@ -21,15 +21,13 @@
 import unittest
 import sys
 import os
-
-from mxnet.base import xrange
-
 current_working_directory = os.getcwd()
 sys.path.append(current_working_directory + "/..")
 sys.path.append(current_working_directory + "/../converter/")
 import _mxnet_converter as mxnet_converter
 from converter.utils import load_model
 
+
 VAL_DATA = 'data/val-5k-256.rec'
 URL = 'http://data.mxnet.io/data/val-5k-256.rec'
 
@@ -136,4 +134,4 @@ def test_vgg16(self):
 
 if __name__ == '__main__':
     suite = unittest.TestLoader().loadTestsFromTestCase(ImageNetTest)
-    unittest.TextTestRunner(verbosity=2).run(suite)
+    unittest.TextTestRunner(verbosity=2).run(suite)
\ No newline at end of file
diff --git a/tools/coreml/test/test_mxnet_models.py b/tools/coreml/test/test_mxnet_models.py
index e8f9b24b37c8..36ac0ece3641 100644
--- a/tools/coreml/test/test_mxnet_models.py
+++ b/tools/coreml/test/test_mxnet_models.py
@@ -21,14 +21,11 @@
 import numpy as np
 import sys
 import os
-from collections import namedtuple
-
-from mxnet.base import xrange
-
 current_working_directory = os.getcwd()
 sys.path.append(current_working_directory + "/..")
 sys.path.append(current_working_directory + "/../converter/")
 import _mxnet_converter as mxnet_converter
+from collections import namedtuple
 
 
 def _mxnet_remove_batch(input_data):