fix-lcel-notebooks (#11111)

fix some missing imports/naming

docs/extras/expression_language/how_to/fallbacks.ipynb

@@ -277,7 +277,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.1"
+   "version": "3.10.1"
   }
  },
  "nbformat": 4,

docs/extras/expression_language/how_to/functions.ipynb

@@ -14,12 +14,15 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 77,
+   "execution_count": 4,
    "id": "6bb221b3",
    "metadata": {},
    "outputs": [],
    "source": [
     "from langchain.schema.runnable import RunnableLambda\n",
+    "from langchain.prompts import ChatPromptTemplate\n",
+    "from langchain.chat_models import ChatOpenAI\n",
+    "from operator import itemgetter\n",
     "\n",
     "def length_function(text):\n",
     "    return len(text)\n",
@@ -31,6 +34,7 @@
     "    return _multiple_length_function(_dict[\"text1\"], _dict[\"text2\"])\n",
     "\n",
     "prompt = ChatPromptTemplate.from_template(\"what is {a} + {b}\")\n",
+    "model = ChatOpenAI()\n",
     "\n",
     "chain1 = prompt | model\n",
     "\n",
@@ -42,7 +46,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 78,
+   "execution_count": 5,
    "id": "5488ec85",
    "metadata": {},
    "outputs": [
@@ -52,7 +56,7 @@
        "AIMessage(content='3 + 9 equals 12.', additional_kwargs={}, example=False)"
       ]
      },
-     "execution_count": 78,
+     "execution_count": 5,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -73,17 +77,18 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 139,
+   "execution_count": 9,
    "id": "80b3b5f6-5d58-44b9-807e-cce9a46bf49f",
    "metadata": {},
    "outputs": [],
    "source": [
-    "from langchain.schema.runnable import RunnableConfig"
+    "from langchain.schema.runnable import RunnableConfig\n",
+    "from langchain.schema.output_parser import StrOutputParser"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": 149,
+   "execution_count": 10,
    "id": "ff0daf0c-49dd-4d21-9772-e5fa133c5f36",
    "metadata": {},
    "outputs": [],
@@ -109,7 +114,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 152,
+   "execution_count": 12,
    "id": "1a5e709e-9d75-48c7-bb9c-503251990505",
    "metadata": {},
    "outputs": [
@@ -132,6 +137,14 @@
     "    RunnableLambda(parse_or_fix).invoke(\"{foo: bar}\", {\"tags\": [\"my-tag\"], \"callbacks\": [cb]})\n",
     "    print(cb)"
    ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "29f55c38",
+   "metadata": {},
+   "outputs": [],
+   "source": []
   }
  ],
  "metadata": {
@@ -150,7 +163,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.1"
+   "version": "3.10.1"
   }
  },
  "nbformat": 4,

docs/extras/expression_language/how_to/map.ipynb

@@ -12,18 +12,18 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 5,
+   "execution_count": 2,
    "id": "7e1873d6-d4b6-43ac-96a1-edcf178201e0",
    "metadata": {},
    "outputs": [
     {
      "data": {
       "text/plain": [
-       "{'joke': AIMessage(content=\"Why don't bears wear shoes? \\nBecause they have bear feet!\", additional_kwargs={}, example=False),\n",
-       " 'poem': AIMessage(content=\"In twilight's embrace, a bear's gentle lumber,\\nSilent strength, nature's awe, a humble slumber.\", additional_kwargs={}, example=False)}"
+       "{'joke': AIMessage(content=\"Why don't bears wear shoes? \\n\\nBecause they have bear feet!\", additional_kwargs={}, example=False),\n",
+       " 'poem': AIMessage(content=\"In woodland depths, bear prowls with might,\\nSilent strength, nature's sovereign, day and night.\", additional_kwargs={}, example=False)}"
       ]
      },
-     "execution_count": 5,
+     "execution_count": 2,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -38,7 +38,7 @@
     "joke_chain = ChatPromptTemplate.from_template(\"tell me a joke about {topic}\") | model\n",
     "poem_chain = ChatPromptTemplate.from_template(\"write a 2-line poem about {topic}\") | model\n",
     "\n",
-    "map_chain = RunnableMap({\"joke\": chain1, \"poem\": chain2,})\n",
+    "map_chain = RunnableMap({\"joke\": joke_chain, \"poem\": poem_chain,})\n",
     "\n",
     "map_chain.invoke({\"topic\": \"bear\"})"
    ]
@@ -54,7 +54,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 4,
+   "execution_count": 3,
    "id": "267d1460-53c1-4fdb-b2c3-b6a1eb7fccff",
    "metadata": {},
    "outputs": [
@@ -64,7 +64,7 @@
        "'Harrison worked at Kensho.'"
       ]
      },
-     "execution_count": 4,
+     "execution_count": 3,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -191,7 +191,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.1"
+   "version": "3.10.1"
   }
  },
  "nbformat": 4,