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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>
46 lines
1.3 KiB
Python
46 lines
1.3 KiB
Python
from typing import Optional, Type
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from langchain_core.callbacks import CallbackManagerForToolRun
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from langchain_core.tools import BaseTool
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from pydantic import BaseModel, Field
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from langchain_community.tools.file_management.utils import (
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INVALID_PATH_TEMPLATE,
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BaseFileToolMixin,
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FileValidationError,
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)
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class ReadFileInput(BaseModel):
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"""Input for ReadFileTool."""
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file_path: str = Field(..., description="name of file")
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class ReadFileTool(BaseFileToolMixin, BaseTool):
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"""Tool that reads a file."""
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name: str = "read_file"
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args_schema: Type[BaseModel] = ReadFileInput
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description: str = "Read file from disk"
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def _run(
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self,
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file_path: str,
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run_manager: Optional[CallbackManagerForToolRun] = None,
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) -> str:
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try:
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read_path = self.get_relative_path(file_path)
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except FileValidationError:
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return INVALID_PATH_TEMPLATE.format(arg_name="file_path", value=file_path)
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if not read_path.exists():
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return f"Error: no such file or directory: {file_path}"
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try:
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with read_path.open("r", encoding="utf-8") as f:
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content = f.read()
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return content
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except Exception as e:
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return "Error: " + str(e)
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# TODO: Add aiofiles method
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