def create_initial_revisions(self, app, model_class, comment, batch_size, verbosity=2, database=None, **kwargs):
        """Creates the set of initial revisions for the given model."""
        # Import the relevant admin module.
        try:
            import_module("%s.admin" % app.__name__.rsplit(".", 1)[0])
        except ImportError:
            pass
        # Check all models for empty revisions.
        if default_revision_manager.is_registered(model_class):
            if verbosity >= 2:
                print("Creating initial revision(s) for model %s ..."  % (force_text(model_class._meta.verbose_name)))
            created_count = 0
            content_type = ContentType.objects.db_manager(database).get_for_model(model_class)
            versioned_pk_queryset = Version.objects.using(database).filter(content_type=content_type).all()
            live_objs = model_class._default_manager.using(database).all()
            if has_int_pk(model_class):
                # We can do this as a fast database join!
                live_objs = live_objs.exclude(
                    pk__in = versioned_pk_queryset.values_list("object_id_int", flat=True)
                )
            else:
                # This join has to be done as two separate queries.
                live_objs = live_objs.exclude(
                    pk__in = list(versioned_pk_queryset.values_list("object_id", flat=True).iterator())
                )
            # Save all the versions.
            ids = list(live_objs.values_list(model_class._meta.pk.name, flat=True).order_by())
            total = len(ids)
            for i in range(0, total, batch_size):
                chunked_ids = ids[i:i+batch_size]
                objects = live_objs.in_bulk(chunked_ids)
                for id, obj in objects.items():
                    try:
                        default_revision_manager.save_revision((obj,), comment=comment, db=database)
                    except:
                        print("ERROR: Could not save initial version for %s %s." % (model_class.__name__, obj.pk))
                        raise
                    created_count += 1
                reset_queries()
                if verbosity >= 2:
                    print((created_count, total) % "Created %s of %s.")

            # Print out a message, if feeling verbose.
            if verbosity >= 2:
                print("Created %s initial revision(s) for model %s." % (created_count, force_text(model_class._meta.verbose_name)))
        else:
            if verbosity >= 2:
                print("Model %s is not registered."  % (force_text(model_class._meta.verbose_name)))
dataset/ETHPy150Open etianen/django-reversion/src/reversion/management/commands/createinitialrevisions.py/Command.create_initial_revisions/swapped operands of `%`