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langchain/docs/modules/indexes/document_loaders/examples/wikipedia.ipynb

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{
"cells": [
{
"cell_type": "markdown",
"id": "bda1f3f5",
"metadata": {},
"source": [
"# Wikipedia\n",
"\n",
">[Wikipedia](https://wikipedia.org/) is a multilingual free online encyclopedia written and maintained by a community of volunteers, known as Wikipedians, through open collaboration and using a wiki-based editing system called MediaWiki. `Wikipedia` is the largest and most-read reference work in history.\n",
"\n",
"This notebook shows how to load wiki pages from `wikipedia.org` into the Document format that we use downstream."
]
},
{
"cell_type": "markdown",
"id": "1b7a1eef-7bf7-4e7d-8bfc-c4e27c9488cb",
"metadata": {},
"source": [
"## Installation"
]
},
{
"cell_type": "markdown",
"id": "2abd5578-aa3d-46b9-99af-8b262f0b3df8",
"metadata": {},
"source": [
"First, you need to install `wikipedia` python package."
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "b674aaea-ed3a-4541-8414-260a8f67f623",
"metadata": {
"tags": []
},
"outputs": [],
"source": [
"#!pip install wikipedia"
]
},
{
"cell_type": "markdown",
"id": "95f05e1c-195e-4e2b-ae8e-8d6637f15be6",
"metadata": {},
"source": [
"## Examples"
]
},
{
"cell_type": "markdown",
"id": "e29b954c-1407-4797-ae21-6ba8937156be",
"metadata": {},
"source": [
"`WikipediaLoader` has these arguments:\n",
"- `query`: free text which used to find documents in Wikipedia\n",
"- optional `lang`: default=\"en\". Use it to search in a specific language part of Wikipedia\n",
"- optional `load_max_docs`: default=100. Use it to limit number of downloaded documents. It takes time to download all 100 documents, so use a small number for experiments. There is a hard limit of 300 for now.\n",
"- optional `load_all_available_meta`: default=False. By default only the most important fields downloaded: `Published` (date when document was published/last updated), `title`, `Summary`. If True, other fields also downloaded."
]
},
{
"cell_type": "code",
"execution_count": 3,
"id": "9bfd5e46",
"metadata": {},
"outputs": [],
"source": [
"from langchain.document_loaders import WikipediaLoader"
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "700e4ef2",
"metadata": {},
"outputs": [],
"source": [
"docs = WikipediaLoader(query='HUNTER X HUNTER', load_max_docs=2).load()\n",
"len(docs)"
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "8977bac0-0042-4f23-9754-247dbd32439b",
"metadata": {
"tags": []
},
"outputs": [],
"source": [
"docs[0].metadata # meta-information of the Document"
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "46969806-45a9-4c4d-a61b-cfb9658fc9de",
"metadata": {
"tags": []
},
"outputs": [],
"source": [
"docs[0].page_content[:400] # a content of the Document \n"
]
}
],
"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,
"nbformat_minor": 5
}