Source code for langchain_community.document_loaders.text

import logging
from pathlib import Path
from typing import Iterator, Optional, Union

from langchain_core.documents import Document

from langchain_community.document_loaders.base import BaseLoader
from langchain_community.document_loaders.helpers import detect_file_encodings

logger = logging.getLogger(__name__)

[docs]class TextLoader(BaseLoader): """Load text file. Args: file_path: Path to the file to load. encoding: File encoding to use. If `None`, the file will be loaded with the default system encoding. autodetect_encoding: Whether to try to autodetect the file encoding if the specified encoding fails. """
[docs] def __init__( self, file_path: Union[str, Path], encoding: Optional[str] = None, autodetect_encoding: bool = False, ): """Initialize with file path.""" self.file_path = file_path self.encoding = encoding self.autodetect_encoding = autodetect_encoding
[docs] def lazy_load(self) -> Iterator[Document]: """Load from file path.""" text = "" try: with open(self.file_path, encoding=self.encoding) as f: text = except UnicodeDecodeError as e: if self.autodetect_encoding: detected_encodings = detect_file_encodings(self.file_path) for encoding in detected_encodings: logger.debug(f"Trying encoding: {encoding.encoding}") try: with open(self.file_path, encoding=encoding.encoding) as f: text = break except UnicodeDecodeError: continue else: raise RuntimeError(f"Error loading {self.file_path}") from e except Exception as e: raise RuntimeError(f"Error loading {self.file_path}") from e metadata = {"source": str(self.file_path)} yield Document(page_content=text, metadata=metadata)