From 88d71f69861a5b784c2c7793dd9abb97470ecc10 Mon Sep 17 00:00:00 2001
From: Artur Barseghyan <artur.barseghyan@gmail.com>
Date: Wed, 16 Oct 2024 19:42:52 +0200
Subject: [PATCH] docs: Cosmetic documentation fix. Update `llm_chain.ipynb`.
 (#27394)

ATM [LLM chain
docs](https://python.langchain.com/docs/tutorials/llm_chain/#server)
say:

```
# 3. Create parser
parser = StrOutputParser()

# 4. Create chain
chain = prompt_template | model | parser


# 4. App definition
app = FastAPI(
  title="LangChain Server",
  version="1.0",
  description="A simple API server using LangChain's Runnable interfaces",
)

# 5. Adding chain route
add_routes(
    app,
    chain,
    path="/chain",
)
```

I corrected it to:


```
# 3. Create parser
parser = StrOutputParser()

# 4. Create chain
chain = prompt_template | model | parser

# 5. App definition
app = FastAPI(
  title="LangChain Server",
  version="1.0",
  description="A simple API server using LangChain's Runnable interfaces",
)

# 6. Adding chain route
add_routes(
    app,
    chain,
    path="/chain",
)
```
---
 docs/docs/tutorials/llm_chain.ipynb | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/docs/docs/tutorials/llm_chain.ipynb b/docs/docs/tutorials/llm_chain.ipynb
index 24f024173bd..c698c34473d 100644
--- a/docs/docs/tutorials/llm_chain.ipynb
+++ b/docs/docs/tutorials/llm_chain.ipynb
@@ -497,15 +497,14 @@
     "# 4. Create chain\n",
     "chain = prompt_template | model | parser\n",
     "\n",
-    "\n",
-    "# 4. App definition\n",
+    "# 5. App definition\n",
     "app = FastAPI(\n",
     "  title=\"LangChain Server\",\n",
     "  version=\"1.0\",\n",
     "  description=\"A simple API server using LangChain's Runnable interfaces\",\n",
     ")\n",
     "\n",
-    "# 5. Adding chain route\n",
+    "# 6. Adding chain route\n",
     "add_routes(\n",
     "    app,\n",
     "    chain,\n",