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https://github.com/hwchase17/langchain.git
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8516a03a02
This PR upgrades langchain-community to pydantic 2.
* Most of this PR was auto-generated using code mods with gritql
(https://github.com/eyurtsev/migrate-pydantic/tree/main)
* Subsequently, some code was fixed manually due to accommodate
differences between pydantic 1 and 2
Breaking Changes:
- Use TEXTEMBED_API_KEY and TEXTEMBEB_API_URL for env variables for text
embed integrations:
cbea780492
Other changes:
- Added pydantic_settings as a required dependency for community. This
may be removed if we have enough time to convert the dependency into an
optional one.
---------
Co-authored-by: Eugene Yurtsev <eyurtsev@gmail.com>
Co-authored-by: Bagatur <baskaryan@gmail.com>
57 lines
1.9 KiB
Python
57 lines
1.9 KiB
Python
from __future__ import annotations
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from typing import Optional, Type
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from langchain_core.callbacks import (
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AsyncCallbackManagerForToolRun,
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CallbackManagerForToolRun,
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)
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from pydantic import BaseModel
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from langchain_community.tools.playwright.base import BaseBrowserTool
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from langchain_community.tools.playwright.utils import (
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aget_current_page,
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get_current_page,
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)
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class NavigateBackTool(BaseBrowserTool):
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"""Navigate back to the previous page in the browser history."""
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name: str = "previous_webpage"
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description: str = "Navigate back to the previous page in the browser history"
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args_schema: Type[BaseModel] = BaseModel
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def _run(self, run_manager: Optional[CallbackManagerForToolRun] = None) -> str:
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"""Use the tool."""
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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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response = page.go_back()
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if response:
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return (
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f"Navigated back to the previous page with URL '{response.url}'."
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f" Status code {response.status}"
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)
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else:
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return "Unable to navigate back; no previous page in the history"
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async def _arun(
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self,
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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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page = await aget_current_page(self.async_browser)
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response = await page.go_back()
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if response:
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return (
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f"Navigated back to the previous page with URL '{response.url}'."
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f" Status code {response.status}"
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)
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else:
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return "Unable to navigate back; no previous page in the history"
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