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40 lines
1.3 KiB
Python
40 lines
1.3 KiB
Python
from __future__ import annotations
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from typing import Type
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from pydantic import BaseModel, root_validator
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from langchain.tools.playwright.base import BaseBrowserTool
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from langchain.tools.playwright.utils import 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_args(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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async def _arun(self) -> 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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page = await get_current_page(self.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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