old_contents: # -*- coding: utf-8 -*-
  
  print 'Deprecation warning: the contents of osutils have moved to fileutils'
  from fileutils import *
  
new_contents: # -*- coding: utf-8 -*-
  import warnings
  warnings.warn("Deprecation warning: "
                "the contents of osutils have moved to fileutils")
  from fileutils import *
  
subject: Use warnings.warn