langchain/docs/extras/integrations/document_loaders/wikipedia.ipynb

Wikipedia

Wikipedia 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.

This notebook shows how to load wiki pages from wikipedia.org into the Document format that we use downstream.

Installation

First, you need to install wikipedia python package.

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#!pip install wikipedia

Examples

WikipediaLoader has these arguments:

• query: free text which used to find documents in Wikipedia
• optional lang: default="en". Use it to search in a specific language part of Wikipedia
• 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.
• 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.

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from langchain.document_loaders import WikipediaLoader

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docs = WikipediaLoader(query="HUNTER X HUNTER", load_max_docs=2).load()
len(docs)

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docs[0].metadata  # meta-information of the Document

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docs[0].page_content[:400]  # a content of the Document