mirror of
https://github.com/Mintplex-Labs/langchain-python.git
synced 2026-08-26 16:55:38 -04:00
Ankush Gola
d3ec00b566
Co-authored-by: Nuno Campos <nuno@boringbits.io> Co-authored-by: Davis Chase <130488702+dev2049@users.noreply.github.com> Co-authored-by: Zander Chase <130414180+vowelparrot@users.noreply.github.com> Co-authored-by: Harrison Chase <hw.chase.17@gmail.com>
64 lines
2.2 KiB
Python
64 lines
2.2 KiB
Python
from __future__ import annotations
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from typing import Optional, Type
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from pydantic import BaseModel, root_validator
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from langchain.callbacks.manager import (
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AsyncCallbackManagerForToolRun,
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CallbackManagerForToolRun,
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)
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from langchain.tools.playwright.base import BaseBrowserTool
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from langchain.tools.playwright.utils import aget_current_page, get_current_page
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class ExtractTextTool(BaseBrowserTool):
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name: str = "extract_text"
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description: str = "Extract all the text on the current webpage"
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args_schema: Type[BaseModel] = BaseModel
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@root_validator
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def check_acheck_bs_importrgs(cls, values: dict) -> dict:
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"""Check that the arguments are valid."""
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try:
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from bs4 import BeautifulSoup # noqa: F401
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except ImportError:
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raise ValueError(
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"The 'beautifulsoup4' package is required to use this tool."
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" Please install it with 'pip install beautifulsoup4'."
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)
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return values
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def _run(self, run_manager: Optional[CallbackManagerForToolRun] = None) -> str:
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"""Use the tool."""
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# Use Beautiful Soup since it's faster than looping through the elements
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from bs4 import BeautifulSoup
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if self.sync_browser is None:
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raise ValueError(f"Synchronous browser not provided to {self.name}")
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page = get_current_page(self.sync_browser)
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html_content = page.content()
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# Parse the HTML content with BeautifulSoup
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soup = BeautifulSoup(html_content, "lxml")
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return " ".join(text for text in soup.stripped_strings)
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async def _arun(
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self, run_manager: Optional[AsyncCallbackManagerForToolRun] = None
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) -> str:
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"""Use the tool."""
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if self.async_browser is None:
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raise ValueError(f"Asynchronous browser not provided to {self.name}")
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# Use Beautiful Soup since it's faster than looping through the elements
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from bs4 import BeautifulSoup
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page = await aget_current_page(self.async_browser)
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html_content = await page.content()
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# Parse the HTML content with BeautifulSoup
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soup = BeautifulSoup(html_content, "lxml")
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return " ".join(text for text in soup.stripped_strings)
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