diff --git a/advanced_functionality/multi_model_catboost/multi_model_catboost.ipynb b/advanced_functionality/multi_model_catboost/multi_model_catboost.ipynb
index 4f5e283762..8582be29b1 100644
--- a/advanced_functionality/multi_model_catboost/multi_model_catboost.ipynb
+++ b/advanced_functionality/multi_model_catboost/multi_model_catboost.ipynb
@@ -383,9 +383,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "endpoint_config_name = \"catboost-multimodel-config\" + strftime(\n",
-    "    \"%Y-%m-%d-%H-%M-%S\", gmtime()\n",
-    ")\n",
+    "endpoint_config_name = \"catboost-multimodel-config\" + strftime(\"%Y-%m-%d-%H-%M-%S\", gmtime())\n",
     "print(\"Endpoint config name: \" + endpoint_config_name)\n",
     "\n",
     "create_endpoint_config_response = sm_client.create_endpoint_config(\n",
@@ -423,9 +421,7 @@
     "\n",
     "import time\n",
     "\n",
-    "endpoint_name = \"catboost-multimodel-endpoint-\" + strftime(\n",
-    "    \"%Y-%m-%d-%H-%M-%S\", gmtime()\n",
-    ")\n",
+    "endpoint_name = \"catboost-multimodel-endpoint-\" + strftime(\"%Y-%m-%d-%H-%M-%S\", gmtime())\n",
     "print(\"Endpoint name: \" + endpoint_name)\n",
     "\n",
     "create_endpoint_response = sm_client.create_endpoint(\n",
@@ -520,9 +516,7 @@
    "source": [
     "# delete the end point\n",
     "\n",
-    "sm_client.delete_endpoint(\n",
-    "    EndpointName=endpoint_name\n",
-    ")"
+    "sm_client.delete_endpoint(EndpointName=endpoint_name)"
    ],
    "metadata": {
     "collapsed": false,