message: Replace raw_input/input with six.moves.input for python 2/3
  In python 3 input is the equivalent of raw_input in python 2.
  This fix is an enhancement to replace raw_input/input with
  six.moves.input, which is compatible with both python 2 and python 3.
diff: @@ -19,6 +19,8 @@ from __future__ import print_function
  import readline
  +import six
  +
  from tensorflow.python.debug.cli import base_ui
  from tensorflow.python.debug.cli import debugger_cli_common
  @@ -39,11 +41,7 @@ class ReadlineUI(base_ui.BaseUI):
  readline.set_completer(self._readline_complete)
  readline.parse_and_bind("tab: complete")
  - # For Python 2-3 compatibility.
  - try:
  - self._input = raw_input
  - except NameError:
  - self._input = input
  + self._input = six.moves.input
  def _readline_complete(self, text, state):
  context, prefix, except_last_word = self._analyze_tab_complete_input(text)
  