Source code for langchain_community.document_loaders.scrapfly

"""Scrapfly Web Reader."""

import logging
from typing import Iterator, List, Literal, Optional

from langchain_core.document_loaders import BaseLoader
from langchain_core.documents import Document
from langchain_core.utils import get_from_env

logger = logging.getLogger(__file__)


[docs]class ScrapflyLoader(BaseLoader): """Turn a url to llm accessible markdown with `Scrapfly.io`. For further details, visit: https://scrapfly.io/docs/sdk/python """
[docs] def __init__( self, urls: List[str], *, api_key: Optional[str] = None, scrape_format: Literal["markdown", "text"] = "markdown", scrape_config: Optional[dict] = None, continue_on_failure: bool = True, ) -> None: """Initialize client. Args: urls: List of urls to scrape. api_key: The Scrapfly API key. If not specified must have env var SCRAPFLY_API_KEY set. scrape_format: Scrape result format, one or "markdown" or "text". scrape_config: Dictionary of ScrapFly scrape config object. continue_on_failure: Whether to continue if scraping a url fails. """ try: from scrapfly import ScrapflyClient except ImportError: raise ImportError( "`scrapfly` package not found, please run `pip install scrapfly-sdk`" ) if not urls: raise ValueError("URLs must be provided.") api_key = api_key or get_from_env("api_key", "SCRAPFLY_API_KEY") self.scrapfly = ScrapflyClient(key=api_key) self.urls = urls self.scrape_format = scrape_format self.scrape_config = scrape_config self.continue_on_failure = continue_on_failure
[docs] def lazy_load(self) -> Iterator[Document]: from scrapfly import ScrapeConfig scrape_config = self.scrape_config if self.scrape_config is not None else {} for url in self.urls: try: response = self.scrapfly.scrape( ScrapeConfig(url, format=self.scrape_format, **scrape_config) ) yield Document( page_content=response.scrape_result["content"], metadata={"url": url}, ) except Exception as e: if self.continue_on_failure: logger.error(f"Error fetching data from {url}, exception: {e}") else: raise e