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37 lines
1.1 KiB
Python
37 lines
1.1 KiB
Python
"""Loads a PDF with pypdf and chunks at character level."""
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from typing import List
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from langchain.docstore.document import Document
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from langchain.document_loaders.base import BaseLoader
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class PagedPDFSplitter(BaseLoader):
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"""Loads a PDF with pypdf and chunks at character level.
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Loader also stores page numbers in metadatas.
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"""
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def __init__(self, file_path: str):
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"""Initialize with file path."""
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try:
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import pypdf # noqa:F401
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except ImportError:
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raise ValueError(
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"pypdf package not found, please install it with " "`pip install pypdf`"
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)
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self._file_path = file_path
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def load(self) -> List[Document]:
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"""Load given path as pages."""
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import pypdf
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pdf_file_obj = open(self._file_path, "rb")
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pdf_reader = pypdf.PdfReader(pdf_file_obj)
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docs = []
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for i, page in enumerate(pdf_reader.pages):
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text = page.extract_text()
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metadata = {"source": self._file_path, "page": i}
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docs.append(Document(page_content=text, metadata=metadata))
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pdf_file_obj.close()
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return docs
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