diff --git a/docs/docs/tutorials/introduction.ipynb b/docs/docs/tutorials/introduction.ipynb
index cf6c15ca0..10c9ef4b2 100644
--- a/docs/docs/tutorials/introduction.ipynb
+++ b/docs/docs/tutorials/introduction.ipynb
@@ -958,7 +958,9 @@
     "\n",
     "# The config is the **second positional argument** to stream() or invoke()!\n",
     "events = graph.stream(\n",
-    "    {\"messages\": [{\"role\": \"user\", \"content\": user_input}]}, config, stream_mode=\"values\"\n",
+    "    {\"messages\": [{\"role\": \"user\", \"content\": user_input}]},\n",
+    "    config,\n",
+    "    stream_mode=\"values\",\n",
     ")\n",
     "for event in events:\n",
     "    event[\"messages\"][-1].pretty_print()"
@@ -998,7 +1000,9 @@
     "\n",
     "# The config is the **second positional argument** to stream() or invoke()!\n",
     "events = graph.stream(\n",
-    "    {\"messages\": [{\"role\": \"user\", \"content\": user_input}]}, config, stream_mode=\"values\"\n",
+    "    {\"messages\": [{\"role\": \"user\", \"content\": user_input}]},\n",
+    "    config,\n",
+    "    stream_mode=\"values\",\n",
     ")\n",
     "for event in events:\n",
     "    event[\"messages\"][-1].pretty_print()"
@@ -1231,7 +1235,7 @@
     "    # Because we will be interrupting during tool execution,\n",
     "    # we disable parallel tool calling to avoid repeating any\n",
     "    # tool invocations when we resume.\n",
-    "    assert(len(message.tool_calls) <= 1)\n",
+    "    assert len(message.tool_calls) <= 1\n",
     "    return {\"messages\": [message]}\n",
     "\n",
     "\n",
@@ -1348,7 +1352,9 @@
     "config = {\"configurable\": {\"thread_id\": \"1\"}}\n",
     "\n",
     "events = graph.stream(\n",
-    "    {\"messages\": [{\"role\": \"user\", \"content\": user_input}]}, config, stream_mode=\"values\"\n",
+    "    {\"messages\": [{\"role\": \"user\", \"content\": user_input}]},\n",
+    "    config,\n",
+    "    stream_mode=\"values\",\n",
     ")\n",
     "for event in events:\n",
     "    if \"messages\" in event:\n",
@@ -1663,7 +1669,7 @@
     "\n",
     "def chatbot(state: State):\n",
     "    message = llm_with_tools.invoke(state[\"messages\"])\n",
-    "    assert(len(message.tool_calls) <= 1)\n",
+    "    assert len(message.tool_calls) <= 1\n",
     "    return {\"messages\": [message]}\n",
     "\n",
     "\n",
@@ -1737,7 +1743,9 @@
     "config = {\"configurable\": {\"thread_id\": \"1\"}}\n",
     "\n",
     "events = graph.stream(\n",
-    "    {\"messages\": [{\"role\": \"user\", \"content\": user_input}]}, config, stream_mode=\"values\"\n",
+    "    {\"messages\": [{\"role\": \"user\", \"content\": user_input}]},\n",
+    "    config,\n",
+    "    stream_mode=\"values\",\n",
     ")\n",
     "for event in events:\n",
     "    if \"messages\" in event:\n",