text: # -*- coding: utf-8 -*-
  
  from __future__ import absolute_import, division, print_function, unicode_literals
  
  import os
  import platform
  import sys
  from collections import OrderedDict
  
  is_py2 = sys.version_info[0] == 2
  is_py3 = sys.version_info[0] == 3
  
  is_pypy = platform.python_implementation().lower() == 'pypy'
  is_cpython = platform.python_implementation().lower() == 'cpython'
  
  is_posix = os.name == 'posix'
  is_nt = os.name == 'nt'
  is_linux = sys.platform.startswith('linux')
  is_win32 = sys.platform == 'win32'
  
  
  def dummy_callback(*arguments, **keywords): pass
  