old_contents: #
  # Author: Satoru SATOH <ssato redhat.com>
  # License: MIT
  #
  # pylint: disable=unused-import,import-error,invalid-name,wrong-import-position
  """
  Compatiblity module
  """
  from __future__ import absolute_import
  
  import itertools
  import sys
  
  try:
      from logging import NullHandler
  except ImportError:  # python < 2.7 doesn't have it.
      import logging
  
      class NullHandler(logging.Handler):
          """
          Logging handler does nothing.
          """
          def emit(self, record):
              pass
  
  
  IS_PYTHON_3 = sys.version_info[0] == 3
  IS_PYTHON_2_6 = sys.version_info[0] == 2 and sys.version_info[1] == 6
  
  
  # Borrowed from library doc, 9.7.1 Itertools functions:
  def _from_iterable(iterables):
      """
      itertools.chain.from_iterable alternative.
  
      >>> list(_from_iterable([[1, 2], [3, 4]]))
      [1, 2, 3, 4]
      """
      for itr in iterables:
          for element in itr:
              yield element
  
  
  def py3_iteritems(dic):
      """wrapper for dict.items() in python 3.x.
  
      >>> list(py3_iteritems({}))
      []
      >>> sorted(py3_iteritems(dict(a=1, b=2)))
      [('a', 1), ('b', 2)]
      """
      return dic.items()
  
  
  # pylint: disable=redefined-builtin
  if IS_PYTHON_3:
      import configparser  # flake8: noqa
      from io import StringIO  # flake8: noqa
      iteritems = py3_iteritems
      from_iterable = itertools.chain.from_iterable
      raw_input = input
      STR_TYPES = (str, )
  else:
      import ConfigParser as configparser  # flake8: noqa
      try:
          from cStringIO import StringIO  # flake8: noqa
      except ImportError:
          from StringIO import StringIO  # flake8: noqa
  
      try:
          from_iterable = itertools.chain.from_iterable
      except AttributeError:
          from_iterable = _from_iterable
  
      assert configparser  # silence pyflakes
      assert StringIO  # ditto
  
      def py_iteritems(dic):
          """wrapper for dict.iteritems() in python < 3.x
  
          >>> list(py_iteritems({}))
          []
          >>> sorted(py_iteritems(dict(a=1, b=2)))
          [('a', 1), ('b', 2)]
          """
          return dic.iteritems()
  
      iteritems = py_iteritems
      raw_input = raw_input
      STR_TYPES = (str, unicode)
  
  try:
      from collections import OrderedDict
  except ImportError:
      from ordereddict import OrderedDict  # Python 2.6
  
  # vim:sw=4:ts=4:et:
  
new_contents: #
  # Author: Satoru SATOH <ssato redhat.com>
  # License: MIT
  #
  # pylint: disable=unused-import,import-error,invalid-name,wrong-import-position
  """
  Compatiblity module
  """
  from __future__ import absolute_import
  
  import itertools
  import sys
  
  try:
      from logging import NullHandler
  except ImportError:  # python < 2.7 doesn't have it.
      import logging
  
      class NullHandler(logging.Handler):
          """
          Logging handler does nothing.
          """
          def emit(self, record):
              pass
  
  
  (_PY_MAJOR, _PY_MINOR) = sys.version_info[:2]
  IS_PYTHON_3 = _PY_MAJOR == 3
  IS_PYTHON_3_3_OR_OLDER = _PY_MAJOR == 3 and _PY_MINOR <= 3
  IS_PYTHON_2_6 = _PY_MAJOR == 2 and _PY_MINOR == 6
  
  
  # Borrowed from library doc, 9.7.1 Itertools functions:
  def _from_iterable(iterables):
      """
      itertools.chain.from_iterable alternative.
  
      >>> list(_from_iterable([[1, 2], [3, 4]]))
      [1, 2, 3, 4]
      """
      for itr in iterables:
          for element in itr:
              yield element
  
  
  def py3_iteritems(dic):
      """wrapper for dict.items() in python 3.x.
  
      >>> list(py3_iteritems({}))
      []
      >>> sorted(py3_iteritems(dict(a=1, b=2)))
      [('a', 1), ('b', 2)]
      """
      return dic.items()
  
  
  # pylint: disable=redefined-builtin
  if IS_PYTHON_3:
      import configparser  # flake8: noqa
      from io import StringIO  # flake8: noqa
      iteritems = py3_iteritems
      from_iterable = itertools.chain.from_iterable
      raw_input = input
      STR_TYPES = (str, )
  else:
      import ConfigParser as configparser  # flake8: noqa
      try:
          from cStringIO import StringIO  # flake8: noqa
      except ImportError:
          from StringIO import StringIO  # flake8: noqa
  
      try:
          from_iterable = itertools.chain.from_iterable
      except AttributeError:
          from_iterable = _from_iterable
  
      assert configparser  # silence pyflakes
      assert StringIO  # ditto
  
      def py_iteritems(dic):
          """wrapper for dict.iteritems() in python < 3.x
  
          >>> list(py_iteritems({}))
          []
          >>> sorted(py_iteritems(dict(a=1, b=2)))
          [('a', 1), ('b', 2)]
          """
          return dic.iteritems()
  
      iteritems = py_iteritems
      raw_input = raw_input
      STR_TYPES = (str, unicode)
  
  try:
      from collections import OrderedDict
  except ImportError:
      from ordereddict import OrderedDict  # Python 2.6
  
  # vim:sw=4:ts=4:et:
  
subject: add a global IS_PYTHON_3_3_OR_OLDER to identify it