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

EPub

EPUB is an e-book file format that uses the ".epub" file extension. The term is short for electronic publication and is sometimes styled ePub. EPUB is supported by many e-readers, and compatible software is available for most smartphones, tablets, and computers.

This covers how to load .epub documents into the Document format that we can use downstream. You'll need to install the pandoc package for this loader to work.

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#!pip install pandoc

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from langchain.document_loaders import UnstructuredEPubLoader

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loader = UnstructuredEPubLoader("winter-sports.epub")

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data = loader.load()

Retain Elements

Under the hood, Unstructured creates different "elements" for different chunks of text. By default we combine those together, but you can easily keep that separation by specifying mode="elements".

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loader = UnstructuredEPubLoader("winter-sports.epub", mode="elements")

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data = loader.load()

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data[0]

Out [6]:

Document(page_content='The Project Gutenberg eBook of Winter Sports in\nSwitzerland, by E. F. Benson', lookup_str='', metadata={'source': 'winter-sports.epub', 'page_number': 1, 'category': 'Title'}, lookup_index=0)

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