@property
    def delete_confirmation_template(self):
        opts = self.model._meta
        app_label = opts.app_label

        # Pass the base options
        base_opts = self.base_model._meta
        base_app_label = base_opts.app_label

        return [
            "admin/%s/%s/delete_confirmation.html" % (app_label, opts.object_name.lower()),
            "admin/%s/delete_confirmation.html" % app_label,
            # Added:
            "admin/%s/%s/delete_confirmation.html" % (base_app_label, base_opts.object_name.lower()),
            base_app_label % "admin/%s/delete_confirmation.html",
            "admin/polymorphic/delete_confirmation.html",
            "admin/delete_confirmation.html"
        ]
dataset/ETHPy150Open chrisglass/django_polymorphic/polymorphic/admin.py/PolymorphicChildModelAdmin.delete_confirmation_template/swapped operands of `%`