old_contents: import os
  from image_diet import settings
  from django.conf import settings as main_settings
  from django.contrib.staticfiles.storage import StaticFilesStorage
  
  
  class ImageDietFileSystemStorage(StaticFilesStorage):
  
      def post_process(self, files, *args, **kwargs):
          results = []
          print 'test'
          print settings.DIET_COMPRESS_STATIC_IMAGES:
          die
          if settings.DIET_COMPRESS_STATIC_IMAGES:
              if 'image_diet' not in main_settings.INSTALLED_APPS:
                  raise NotImplementedError("You need to install django_image_diet to use DIET_COMPRESS_STATIC_IMAGES")
  
              from image_diet.diet import squeeze
              for f in files:
                  processed_file = squeeze(os.path.join(main_settings.STATIC_ROOT, f))
                  results.append([f, processed_file, True if processed_file is not None else False])
          return results
  
new_contents: import os
  from image_diet import settings
  from django.conf import settings as main_settings
  from django.contrib.staticfiles.storage import StaticFilesStorage
  
  
  class ImageDietFileSystemStorage(StaticFilesStorage):
  
      def post_process(self, files, *args, **kwargs):
          results = []
          print 'test'
          print settings.DIET_COMPRESS_STATIC_IMAGES
          die
          if settings.DIET_COMPRESS_STATIC_IMAGES:
              if 'image_diet' not in main_settings.INSTALLED_APPS:
                  raise NotImplementedError("You need to install django_image_diet to use DIET_COMPRESS_STATIC_IMAGES")
  
              from image_diet.diet import squeeze
              for f in files:
                  processed_file = squeeze(os.path.join(main_settings.STATIC_ROOT, f))
                  results.append([f, processed_file, True if processed_file is not None else False])
          return results
  
subject: Update file_system_storage.py