message: Update array_ops.py
  * Update array_ops.py
  Space import statements according to PEP8
  Remove unnecessary import statements
  * Nit: preserve empty line
diff: @@ -82,6 +82,7 @@ from __future__ import division
  from __future__ import print_function
  import sys
  +
  import numpy as np
  from tensorflow.python.eager import context
  @@ -100,7 +101,6 @@ from tensorflow.python.ops import gen_math_ops
  # pylint: disable=wildcard-import
  from tensorflow.python.ops.gen_array_ops import *
  from tensorflow.python.util import deprecation
  -from tensorflow.python.util.deprecation import deprecated
  # pylint: enable=wildcard-import
  # Used for slicing to specify a new 1 size dimension
  @@ -192,7 +192,9 @@ def expand_dims(input, axis=None, name=None, dim=None):
  # Aliases for some automatically-generated names.
  # pylint: disable=protected-access
  -@deprecated("2016-11-30", "This op will be removed after the deprecation date. "
  +@deprecation.deprecated(
  + "2016-11-30",
  + "This op will be removed after the deprecation date. "
  "Please switch to tf.setdiff1d().")
  def listdiff(x, y, out_idx=None, name=None):
  return gen_array_ops._list_diff(x, y, out_idx, name)
  