Source code for langchain_community.tools.playwright.extract_text

from __future__ import annotations

from typing import Optional, Type

from langchain_core.callbacks import (
    AsyncCallbackManagerForToolRun,
    CallbackManagerForToolRun,
)
from langchain_core.pydantic_v1 import BaseModel, root_validator

from langchain_community.tools.playwright.base import BaseBrowserTool
from langchain_community.tools.playwright.utils import (
    aget_current_page,
    get_current_page,
)


[docs]class ExtractTextTool(BaseBrowserTool): """Tool for extracting all the text on the current webpage.""" name: str = "extract_text" description: str = "Extract all the text on the current webpage" args_schema: Type[BaseModel] = BaseModel @root_validator(pre=True) def check_acheck_bs_importrgs(cls, values: dict) -> dict: """Check that the arguments are valid.""" try: from bs4 import BeautifulSoup # noqa: F401 except ImportError: raise ImportError( "The 'beautifulsoup4' package is required to use this tool." " Please install it with 'pip install beautifulsoup4'." ) return values def _run(self, run_manager: Optional[CallbackManagerForToolRun] = None) -> str: """Use the tool.""" # Use Beautiful Soup since it's faster than looping through the elements from bs4 import BeautifulSoup if self.sync_browser is None: raise ValueError(f"Synchronous browser not provided to {self.name}") page = get_current_page(self.sync_browser) html_content = page.content() # Parse the HTML content with BeautifulSoup soup = BeautifulSoup(html_content, "lxml") return " ".join(text for text in soup.stripped_strings) async def _arun( self, run_manager: Optional[AsyncCallbackManagerForToolRun] = None ) -> str: """Use the tool.""" if self.async_browser is None: raise ValueError(f"Asynchronous browser not provided to {self.name}") # Use Beautiful Soup since it's faster than looping through the elements from bs4 import BeautifulSoup page = await aget_current_page(self.async_browser) html_content = await page.content() # Parse the HTML content with BeautifulSoup soup = BeautifulSoup(html_content, "lxml") return " ".join(text for text in soup.stripped_strings)