谷歌财经

此笔记本介绍了如何使用 Google Finance Tool 从 Google Finance 页面获取信息。

要获取 SerpApi 密钥，请在以下网址注册：https://serpapi.com/users/sign_up。

要将该工具与 Langchain 一起使用，请安装以下软件包

%pip install --upgrade --quiet  google-search-results langchain-community

然后将环境变量 SERPAPI_API_KEY 设置为您的 SerpApi 密钥，或将密钥作为参数传递给包装器 serp_api_key=“your secret key”。

import os

from langchain_community.tools.google_finance import GoogleFinanceQueryRun
from langchain_community.utilities.google_finance import GoogleFinanceAPIWrapper

os.environ["SERPAPI_API_KEY"] = "[your serpapi key]"
tool = GoogleFinanceQueryRun(api_wrapper=GoogleFinanceAPIWrapper())

API 参考：GoogleFinanceQueryRun | GoogleFinanceAPI Rapper

tool.run("Google")

'\nQuery: Google\nstock: GOOGL:NASDAQ\nprice: $161.96\npercentage: 1.68\nmovement: Up\n'

要创建使用 Google Finance 工具的代理，请安装 Langgraph

%pip install --upgrade --quiet langgraph langchain-openai

并使用create_react_agent功能来初始化 ReAct 代理。您还需要设置您的OPEN_API_KEY（访问 https://platform.openai.com）才能访问 OpenAI 的聊天模型。

import os

from langchain.agents import load_tools
from langchain.chat_models import init_chat_model
from langgraph.prebuilt import create_react_agent

os.environ["OPENAI_API_KEY"] = "[your openai key]"
os.environ["SERP_API_KEY"] = "[your serpapi key]"

llm = init_chat_model("gpt-4o-mini", model_provider="openai")
tools = load_tools(["google-scholar", "google-finance"], llm=llm)
agent = create_react_agent(llm, tools)

events = agent.stream(
    {"messages": [("user", "What is Google's stock?")]},
    stream_mode="values",
)
for event in events:
    event["messages"][-1].pretty_print()

API 参考：load_tools | init_chat_model | create_react_agent

================================[1m Human Message [0m=================================

What is Google's stock?
==================================[1m Ai Message [0m==================================
Tool Calls:
  google_finance (call_u676mJAkdojgkW806ZGSE8mF)
 Call ID: call_u676mJAkdojgkW806ZGSE8mF
  Args:
    query: Google
=================================[1m Tool Message [0m=================================
Name: google_finance


Query: Google
stock: GOOGL:NASDAQ
price: $161.96
percentage: 1.68
movement: Up

==================================[1m Ai Message [0m==================================

Google's stock (Ticker: GOOGL) is currently priced at $161.96, showing an increase of 1.68%.

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