old_contents: from __future__ import absolute_import
  from .base import *  # noqa: ignore=F403
  
  
  # dev overrides
  DEBUG = True
  IS_STAGING = True
  
new_contents: from __future__ import absolute_import
  from .base import *  # noqa: ignore=F403
  
  
  # dev overrides
  DEBUG = True
  IS_STAGING = True
  
  extend_list_avoid_repeats(INSTALLED_APPS, [
      'rest_framework_swagger',
  ])
  
subject: add rest_framework_swagger to settings staging