{
 "cells": [
  {
   "cell_type": "markdown",
   "id": "79f24a6b",
   "metadata": {},
   "source": [
    "# Directory Loader\n",
    "This covers how to use the DirectoryLoader to load all documents in a directory. Under the hood, by default this uses the [UnstructuredLoader](./unstructured_file.ipynb)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "id": "019d8520",
   "metadata": {},
   "outputs": [],
   "source": [
    "from langchain.document_loaders import DirectoryLoader"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "0c76cdc5",
   "metadata": {},
   "source": [
    "We can use the `glob` parameter to control which files to load. Note that here it doesn't load the `.rst` file or the `.ipynb` files."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "id": "891fe56f",
   "metadata": {},
   "outputs": [],
   "source": [
    "loader = DirectoryLoader('../', glob=\"**/*.md\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "id": "addfe9cf",
   "metadata": {},
   "outputs": [],
   "source": [
    "docs = loader.load()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "id": "b042086d",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "1"
      ]
     },
     "execution_count": 4,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "len(docs)"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "e633d62f",
   "metadata": {},
   "source": [
    "## Show a progress bar"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "43911860",
   "metadata": {},
   "source": [
    "By default a progress bar will not be shown. To show a progress bar, install the `tqdm` library (e.g. `pip install tqdm`), and set the `show_progress` parameter to `True`."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 10,
   "id": "bb93daac",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Requirement already satisfied: tqdm in /Users/jon/.pyenv/versions/3.9.16/envs/microbiome-app/lib/python3.9/site-packages (4.65.0)\n"
     ]
    },
    {
     "name": "stderr",
     "output_type": "stream",
     "text": [
      "0it [00:00, ?it/s]\n"
     ]
    }
   ],
   "source": [
    "%pip install tqdm\n",
    "loader = DirectoryLoader('../', glob=\"**/*.md\", show_progress=True)\n",
    "docs = loader.load()"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "c5652850",
   "metadata": {},
   "source": [
    "## Change loader class\n",
    "By default this uses the `UnstructuredLoader` class. However, you can change up the type of loader pretty easily."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "id": "81c92da3",
   "metadata": {},
   "outputs": [],
   "source": [
    "from langchain.document_loaders import TextLoader"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "id": "ab38ee36",
   "metadata": {},
   "outputs": [],
   "source": [
    "loader = DirectoryLoader('../', glob=\"**/*.md\", loader_cls=TextLoader)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "id": "25c8740f",
   "metadata": {},
   "outputs": [],
   "source": [
    "docs = loader.load()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "id": "38337763",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "1"
      ]
     },
     "execution_count": 8,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "len(docs)"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "598a2805",
   "metadata": {},
   "source": [
    "If you need to load Python source code files, use the `PythonLoader`."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "id": "c558bd73",
   "metadata": {},
   "outputs": [],
   "source": [
    "from langchain.document_loaders import PythonLoader"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 13,
   "id": "a3cfaba7",
   "metadata": {},
   "outputs": [],
   "source": [
    "loader = DirectoryLoader('../../../../../', glob=\"**/*.py\", loader_cls=PythonLoader)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 14,
   "id": "e2e1e26a",
   "metadata": {},
   "outputs": [],
   "source": [
    "docs = loader.load()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 15,
   "id": "ffb8ff36",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "691"
      ]
     },
     "execution_count": 15,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "len(docs)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "7f6e0eae",
   "metadata": {},
   "outputs": [],
   "source": []
  }
 ],
 "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": "3.10.6"
  }
 },
 "nbformat": 4,
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}