Add Iugu document loader (#5162)

Create IUGU loader
---------

Co-authored-by: Dev 2049 <dev.dev2049@gmail.com>

docs/modules/indexes/document_loaders.rst

@@ -40,6 +40,8 @@ For detailed instructions on how to get set up with Unstructured, see installati
    ./document_loaders/examples/file_directory.ipynb
    ./document_loaders/examples/html.ipynb
    ./document_loaders/examples/image.ipynb
+   ./document_loaders/examples/iugu.ipynb
+   ./document_loaders/examples/jupyter_notebook.ipynb
    ./document_loaders/examples/json.ipynb
    ./document_loaders/examples/markdown.ipynb
    ./document_loaders/examples/microsoft_powerpoint.ipynb

docs/modules/indexes/document_loaders/examples/iugu.ipynb

@@ -0,0 +1,86 @@
+{
+ "cells": [
+  {
+   "attachments": {},
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Iugu\n",
+    "\n",
+    ">[Iugu](https://www.iugu.com/) is a Brazilian services and software as a service (SaaS) company. It offers payment-processing software and application programming interfaces for e-commerce websites and mobile applications.\n",
+    "\n",
+    "This notebook covers how to load data from the `Iugu REST API` into a format that can be ingested into LangChain, along with example usage for vectorization."
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "import os\n",
+    "\n",
+    "\n",
+    "from langchain.document_loaders import IuguLoader\n",
+    "from langchain.indexes import VectorstoreIndexCreator"
+   ]
+  },
+  {
+   "attachments": {},
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "The Iugu API requires an access token, which can be found inside of the Iugu dashboard.\n",
+    "\n",
+    "This document loader also requires a `resource` option which defines what data you want to load.\n",
+    "\n",
+    "Following resources are available:\n",
+    "\n",
+    "`Documentation` [Documentation](https://dev.iugu.com/reference/metadados)\n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "iugu_loader = IuguLoader(\"charges\")"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# Create a vectorstore retriver from the loader\n",
+    "# see https://python.langchain.com/en/latest/modules/indexes/getting_started.html for more details\n",
+    "\n",
+    "index = VectorstoreIndexCreator().from_loaders([iugu_loader])\n",
+    "iugu_doc_retriever = index.vectorstore.as_retriever()"
+   ]
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 3 (ipykernel)",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.9.12"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 4
+}