PEP8 fixes

Author: TomAugspurger

pandas/tests/io/test_parquet.py

@@ -7,8 +7,6 @@
 
 import numpy as np
 import pandas as pd
-from pandas.compat import PY3
-from distutils.version import LooseVersion
 from pandas.compat import PY3, is_platform_windows
 from pandas.io.parquet import (to_parquet, read_parquet, get_engine,
                                PyArrowImpl, FastParquetImpl)

pandas/tests/test_categorical.py

@@ -963,7 +963,7 @@ def test_set_dtype_nans(self):
         tm.assert_numpy_array_equal(result.codes, np.array([0, -1, -1],
                                                            dtype='int8'))
 
-    def test_set_categories(self):
+    def test_set_categories_private(self):
         cat = Categorical(['a', 'b', 'c'], categories=['a', 'b', 'c', 'd'])
         result = cat._set_categories(['a', 'b', 'c', 'd', 'e'])
         expected = Categorical(['a', 'b', 'c'], categories=list('abcde'))