message: Fix FileIO test for Python < 3.6
diff: @@ -20,7 +20,6 @@ from __future__ import division
  from __future__ import print_function
  import os.path
  -import pathlib
  from absl.testing import parameterized
  import numpy as np
  @@ -31,9 +30,18 @@ from tensorflow.python.platform import gfile
  from tensorflow.python.platform import test
  +class PathLike(object):
  + """Backport of pathlib.Path for Python < 3.6"""
  + def __init__(self, name):
  + self.name = name
  +
  + def __fspath__(self):
  + return self.name
  +
  +
  run_all_path_types = parameterized.named_parameters(
  ("str", os.path.join),
  - ("pathlib", lambda *paths: pathlib.Path(os.path.join(*paths))))
  + ("pathlike", lambda *paths: PathLike(os.path.join(*paths))))
  class FileIoTest(test.TestCase, parameterized.TestCase):
  