old_contents: import os
  
  os.environ.setdefault("DJANGO_SETTINGS_MODULE", "pref.settings")
  
  # This application object is used by the development server
  # as well as any WSGI server configured to use this file.
  from django.core.wsgi import get_wsgi_application
  application = get_wsgi_application()
  
new_contents: import os
  import sys
  
  from django.core.handlers.wsgi import WSGIHandler
  
  os.environ['DJANGO_SETTINGS_MODULE'] = 'pref.settings'
  application = WSGIHandler()
  
subject: Update wsgi.py for production