},
{
"cell_type": "code",
- "execution_count": 2,
+ "execution_count": 3,
"metadata": {},
"outputs": [],
"source": [
- "from joy.utils.polytypes import (\n",
+ "from joy.utils.types import (\n",
" doc_from_stack_effect, \n",
" infer,\n",
" reify,\n",