Method const

src/jinja2/nodes.py:890–893

(obj: t.Optional[Expr])

        eval_ctx = get_eval_context(self, eval_ctx)

        def const(obj: t.Optional[Expr]) -> t.Optional[t.Any]:
            if obj is None:
                return None
            return obj.as_const(eval_ctx)

        return slice(const(self.start), const(self.stop), const(self.step))