fix pep8

hoffmann · hoffmann · commit 22663e8c2de9 · 2017-11-07T21:23:16.000+01:00
diff --git a/pandas/tests/io/test_parquet.py b/pandas/tests/io/test_parquet.py
@@ -283,7 +283,7 @@ def test_compression(self, engine, compression):
         self.check_round_trip(df, engine, compression=compression)
 
     def test_read_columns(self, engine, fp):
-        #GH18154
+        # GH18154
         df = pd.DataFrame({'string': list('abc'),
                            'int': list(range(1, 4))})
 
