old_contents: from django.core.management.base import BaseCommand
  import easy_thumbnails
  from mediaman.models import ArtefactRepresentation
  import os
  
  
  class Command(BaseCommand):
      help = "Generate thumbnails for Artefact Representations"
  
      def handle(self, *args, **options):
          unbuffered = os.fdopen(self.stdout.fileno(), 'w', 0)
          self.stdout = unbuffered
  
          ars = ArtefactRepresentation.objects.all()
          self.stdout.write("Found %s images\n" % ars.count())
  
          for ar in ars:
              # self.stdout.write(str(ar.image) + "\n")
              if ar.image.storage.exists(ar.image):
                  easy_thumbnails.files.generate_all_aliases(
                      ar.image, include_global=True)
                  self.stdout.write('.')
              else:
                  self.stdout.write('n')
  
          self.stdout.write("\nProcessed all images\n")
  
new_contents: from django.core.management.base import BaseCommand
  import easy_thumbnails
  from mediaman.models import ArtefactRepresentation
  import os
  #import ImageFile
  from PIL import ImageFile
  
  
  class Command(BaseCommand):
      help = "Generate thumbnails for Artefact Representations"
  
      def handle(self, *args, **options):
          unbuffered = os.fdopen(self.stdout.fileno(), 'w', 0)
          self.stdout = unbuffered
          ImageFile.MAXBLOCK = 1024 * 1024 * 10  # default is 64k, fixes "Suspension not allowed here" error from PIL
  
          ars = ArtefactRepresentation.objects.filter(public=True)
          self.stdout.write("Found %s public images\n" % ars.count())
  
          for ar in ars:
              # self.stdout.write(str(ar.image) + "\n")
              if ar.image.storage.exists(ar.image):
                  easy_thumbnails.files.generate_all_aliases(
                      ar.image, include_global=True)
                  self.stdout.write('.')
              else:
                  self.stdout.write('n')
  
          self.stdout.write("\nProcessed all images\n")
  
subject: Update bulk image generation command