text: from __future__ import absolute_import
  
  from future.utils import PY3
  
  if PY3:
      from tkinter.constants import *
  else:
      try:
          from Tkconstants import *
      except ImportError:
          raise ImportError('The Tkconstants module is missing. Does your Py2 '
                            'installation include tkinter?')
  
  