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community: added args_schema to YahooFinanceNewsTool (#21232)

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Description: this change adds args_schema (pydantic BaseModel) to
YahooFinanceNewsTool for correct schema formatting on LLM function calls

Issue: currently using YahooFinanceNewsTool with OpenAI function calling
returns the following error "TypeError("YahooFinanceNewsTool._run() got
an unexpected keyword argument '__arg1'")". This happens because the
schema sent to the LLM is "input: "{'__arg1': 'MSFT'}"" while the method
should be called with the "query" parameter.

Co-authored-by: Bagatur <22008038+baskaryan@users.noreply.github.com>
This commit is contained in:
Pedro Lima 2024-05-06 21:27:54 +01:00 committed by GitHub
parent 060987d755
commit bebf46c4a2
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1 changed files with 10 additions and 1 deletions
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11
libs/community/langchain_community/tools/yahoo_finance_news.py
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@ -1,7 +1,8 @@
from typing import Iterable, Optional
from typing import Iterable, Optional, Type
from langchain_core.callbacks import CallbackManagerForToolRun
from langchain_core.documents import Document
from langchain_core.pydantic_v1 import BaseModel, Field
from langchain_core.tools import BaseTool
from requests.exceptions import HTTPError, ReadTimeout
from urllib3.exceptions import ConnectionError
@ -9,6 +10,12 @@ from urllib3.exceptions import ConnectionError
from langchain_community.document_loaders.web_base import WebBaseLoader
class YahooFinanceNewsInput(BaseModel):
"""Input for the YahooFinanceNews tool."""
query: str = Field(description="company ticker query to look up")
class YahooFinanceNewsTool(BaseTool):
"""Tool that searches financial news on Yahoo Finance."""
@ -22,6 +29,8 @@ class YahooFinanceNewsTool(BaseTool):
top_k: int = 10
"""The number of results to return."""
args_schema: Type[BaseModel] = YahooFinanceNewsInput
def _run(
self,
query: str,