code: def image_post_delete_handler(sender, instance, **kwargs):
      
      for f in glob.glob('{}/{}*'.format(instance.image.storage.location,
                                         instance.image.name)):
          if not os.path.isdir(f):
              instance.image.storage.delete(f)
docs: Makes sure that a an image is also deleted from the media directory.
  
      This should prevent a load of "dead" image files on disc.