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#

# Source code for langchain.document_loaders.gutenberg

    """Loader that loads .txt web files."""
    from typing import List

    from langchain.docstore.document import Document
    from langchain.document_loaders.base import BaseLoader

    class GutenbergLoader(BaseLoader):
        """Loader that uses urllib to load .txt web files."""

        def __init__(self, file_path: str):
            """Initialize with file path."""
            if not file_path.startswith("https://www.gutenberg.org"):
                raise ValueError("file path must start with 'https://www.gutenberg.org'")

            if not file_path.endswith(".txt"):
                raise ValueError("file path must end with '.txt'")

            self.file_path = file_path

        def load(self) -> List[Document]:
            """Load file."""
            from urllib.request import urlopen

            elements = urlopen(self.file_path)
            text = "\n\n".join([str(el.decode("utf-8-sig")) for el in elements])
            metadata = {"source": self.file_path}
            return [Document(page_content=text, metadata=metadata)]