old_contents: # -*- coding: utf-8 -*-
  
  LEVELS = {
      10: 'completeness_10',
      15: 'completeness_15',
      20: 'completeness_20',
      50: 'completeness_50',
      100: 'completeness_100',
  }
  
new_contents: # -*- coding: utf-8 -*-
  from collections import OrderedDict
  
  LEVELS = OrderedDict([
      (10, 'completeness_10'),
      (15, 'completeness_15'),
      (20, 'completeness_20'),
      (50, 'completeness_50'),
      (100, 'completeness_100'),
  ])
  
subject: order keys in levels dict