diff --git a/pandas/tests/util/test_hashing.py b/pandas/tests/util/test_hashing.py
index 403fed418cae2..49f8fa30ecb6a 100644
--- a/pandas/tests/util/test_hashing.py
+++ b/pandas/tests/util/test_hashing.py
@@ -1,13 +1,13 @@
-import pytest
 import datetime
 
 import numpy as np
-import pandas as pd
+import pytest
 
-from pandas import DataFrame, Series, Index, MultiIndex
-from pandas.util import hash_array, hash_pandas_object
-from pandas.core.util.hashing import hash_tuples, hash_tuple, _hash_scalar
+import pandas as pd
 import pandas.util.testing as tm
+from pandas import DataFrame, Index, MultiIndex, Series
+from pandas.core.util.hashing import _hash_scalar, hash_tuple, hash_tuples
+from pandas.util import hash_array, hash_pandas_object
 
 
 class TestHashing(object):
diff --git a/pandas/tests/util/test_testing.py b/pandas/tests/util/test_testing.py
index d968005a25006..db2fc5ec868c6 100644
--- a/pandas/tests/util/test_testing.py
+++ b/pandas/tests/util/test_testing.py
@@ -1,18 +1,19 @@
 # -*- coding: utf-8 -*-
-import textwrap
 import os
-import pandas as pd
-import pytest
-import numpy as np
 import sys
-from pandas import Series, DataFrame
-import pandas.util.testing as tm
+import textwrap
+
+import numpy as np
+import pytest
+
+import pandas as pd
 import pandas.util._test_decorators as td
-from pandas.util.testing import (assert_almost_equal, raise_with_traceback,
-                                 assert_index_equal, assert_series_equal,
-                                 assert_frame_equal, assert_numpy_array_equal,
-                                 RNGContext)
-from pandas import compat
+import pandas.util.testing as tm
+from pandas import DataFrame, Series, compat
+from pandas.util.testing import (
+    RNGContext, assert_almost_equal, assert_frame_equal, assert_index_equal,
+    assert_numpy_array_equal, assert_series_equal, raise_with_traceback
+)
 
 
 class TestAssertAlmostEqual(object):
diff --git a/pandas/tests/util/test_util.py b/pandas/tests/util/test_util.py
index 6552655110557..61b3cc526d6d9 100644
--- a/pandas/tests/util/test_util.py
+++ b/pandas/tests/util/test_util.py
@@ -1,22 +1,23 @@
 # -*- coding: utf-8 -*-
-import os
-import locale
 import codecs
+import locale
+import os
 import sys
-from uuid import uuid4
 from collections import OrderedDict
+from uuid import uuid4
 
 import pytest
-from pandas.compat import intern, PY3
-import pandas.core.common as com
-from pandas.util._move import move_into_mutable_buffer, BadMove, stolenbuf
-from pandas.util._decorators import deprecate_kwarg, make_signature
-from pandas.util._validators import (validate_args, validate_kwargs,
-                                     validate_args_and_kwargs,
-                                     validate_bool_kwarg)
 
-import pandas.util.testing as tm
+import pandas.core.common as com
 import pandas.util._test_decorators as td
+import pandas.util.testing as tm
+from pandas.compat import PY3, intern
+from pandas.util._decorators import deprecate_kwarg, make_signature
+from pandas.util._move import BadMove, move_into_mutable_buffer, stolenbuf
+from pandas.util._validators import (
+    validate_args, validate_args_and_kwargs, validate_bool_kwarg,
+    validate_kwargs
+)
 
 
 class TestDecorators(object):