docs[minor]: lcel why page (#14089)

docs/.local_build.sh

@@ -13,6 +13,8 @@ rsync -ruv . ../_dist
 cd ../_dist
 poetry run python scripts/model_feat_table.py
 poetry run nbdoc_build --srcdir docs --pause 0
+mkdir docs/templates
+cp ../templates/docs/INDEX.md docs/templates/index.md
 cp ../cookbook/README.md src/pages/cookbook.mdx
 cp ../.github/CONTRIBUTING.md docs/contributing.md
 mkdir -p docs/templates

docs/docs/expression_language/get_started.ipynb

@@ -13,6 +13,7 @@
   },
   {
    "cell_type": "markdown",
+   "id": "befa7fd1",
    "metadata": {},
    "source": [
     "LCEL makes it easy to build complex chains from basic components, and supports out of the box functionality such as streaming, parallelism, and logging."
@@ -77,6 +78,7 @@
   },
   {
    "cell_type": "markdown",
+   "id": "aa1b77fa",
    "metadata": {},
    "source": [
     "### 1. Prompt\n",
@@ -87,6 +89,7 @@
   {
    "cell_type": "code",
    "execution_count": 8,
+   "id": "b8656990",
    "metadata": {},
    "outputs": [
     {
@@ -108,6 +111,7 @@
   {
    "cell_type": "code",
    "execution_count": 9,
+   "id": "e6034488",
    "metadata": {},
    "outputs": [
     {
@@ -128,6 +132,7 @@
   {
    "cell_type": "code",
    "execution_count": 10,
+   "id": "60565463",
    "metadata": {},
    "outputs": [
     {
@@ -147,6 +152,7 @@
   },
   {
    "cell_type": "markdown",
+   "id": "577f0f76",
    "metadata": {},
    "source": [
     "### 2. Model\n",
@@ -157,6 +163,7 @@
   {
    "cell_type": "code",
    "execution_count": 11,
+   "id": "33cf5f72",
    "metadata": {},
    "outputs": [
     {
@@ -177,6 +184,7 @@
   },
   {
    "cell_type": "markdown",
+   "id": "327e7db8",
    "metadata": {},
    "source": [
     "If our `model` was an `LLM`, it would output a string."
@@ -185,6 +193,7 @@
   {
    "cell_type": "code",
    "execution_count": 12,
+   "id": "8feb05da",
    "metadata": {},
    "outputs": [
     {
@@ -207,6 +216,7 @@
   },
   {
    "cell_type": "markdown",
+   "id": "91847478",
    "metadata": {},
    "source": [
     "### 3. Output parser\n",
@@ -218,6 +228,7 @@
   {
    "cell_type": "code",
    "execution_count": 13,
+   "id": "533e59a8",
    "metadata": {},
    "outputs": [
     {
@@ -237,6 +248,7 @@
   },
   {
    "cell_type": "markdown",
+   "id": "9851e842",
    "metadata": {},
    "source": [
     "### 4. Entire Pipeline\n",
@@ -251,6 +263,7 @@
   },
   {
    "cell_type": "markdown",
+   "id": "c4873109",
    "metadata": {},
    "source": [
     "```mermaid\n",
@@ -264,6 +277,7 @@
   },
   {
    "cell_type": "markdown",
+   "id": "fe63534d",
    "metadata": {},
    "source": [
     ":::info\n",
@@ -445,12 +459,14 @@
    ]
   },
   {
-   "cell_type": "code",
-   "execution_count": null,
-   "id": "3ffdde6e-67c9-430d-ac14-28f18f01de04",
+   "cell_type": "markdown",
+   "id": "8c2438df-164e-4bbe-b5f4-461695e45b0f",
    "metadata": {},
-   "outputs": [],
-   "source": []
+   "source": [
+    "## Next steps\n",
+    "\n",
+    "We recommend reading our [Why use LCEL](/docs/expression_language/why) section next to see a side-by-side comparison of the code needed to produce common functionality with and without LCEL."
+   ]
   }
  ],
  "metadata": {
@@ -469,7 +485,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.11.6"
+   "version": "3.9.1"
   }
  },
  "nbformat": 4,

docs/src/theme/Columns.js

@@ -0,0 +1,17 @@
+import React from "react";
+
+export function ColumnContainer({children}) {
+    return (
+        <div style={{ display: "flex", flexWrap: "wrap" }}>
+            {children}
+        </div>
+    )
+}
+
+export function Column({children}) {
+    return (
+        <div style={{ flex: "1 0 300px", padding: "10px", overflowX: "clip" }}>
+            {children}
+        </div>
+    )
+}

docs/vercel.json

@@ -56,10 +56,6 @@
       "source": "/docs/modules/model_io/chat/human_input_chat_model",
       "destination": "/cookbook"
     },
-    {
-      "source": "/docs/expression_language/why",
-      "destination": "/docs/expression_language/"
-    },
     {
       "source": "/docs/modules/model_io/chat/llm_chain",
       "destination":  "/docs/modules/chains/foundational/llm_chain"

pyproject.toml

@@ -59,6 +59,9 @@ ignore-words-list = 'momento,collison,ned,foor,reworkd,parth,whats,aapply,mysogy
 
 [tool.ruff]
 extend-include = ["*.ipynb"]
+extend-exclude = [
+    "docs/docs/expression_language/why.ipynb"  # TODO: look into why linter errors
+]
 
 [tool.ruff.lint.per-file-ignores]
 "**/{cookbook,docs}/*" = [