Skip to main content
本笔记本介绍如何使用 Google Finance 工具从 Google Finance 页面获取信息。 要获取 SerpApi 密钥，请在以下地址注册：serpapi.com/users/sign_up。 要与 LangChain 结合使用该工具，请安装以下软件包： 
pip install -qU 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给封装器 serp_api_key=“your secret key”。 
import os

os.environ["SERPAPI_API_KEY"] = ""

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

tool = GoogleFinanceQueryRun(api_wrapper=GoogleFinanceAPIWrapper())

tool.run("Google")

'\nQuery: Google\nstock: GOOGL:NASDAQ\nprice: $159.96\npercentage: 0.94\nmovement: Up\nus: price = 42210.57, movement = Down\neurope: price = 23638.56, movement = Up\nasia: price = 38183.26, movement = Up\n'
要创建使用 Google Finance 工具的 Agent，请安装 LangGraph： 
pip install -qU langgraph langchain-openai
并使用 create_agent 功能初始化 ReAct Agent。您还需要在 platform.openai.com 设置 OPEN_API_KEY 以访问 OpenAI 的聊天模型。 
import os

os.environ["OPENAI_API_KEY"] = ""
os.environ["SERP_API_KEY"] = ""

from langchain.chat_models import init_chat_model

model = init_chat_model("gpt-4.1-mini", model_provider="openai")

from langchain_community.agent_toolkits.load_tools import load_tools

tools = load_tools(["google-scholar", "google-finance"], llm=model)

from langchain.agents import create_agent


agent = create_agent(model, tools)

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

================================ Human Message =================================

What is Google's stock?
================================== Ai Message ==================================
Tool Calls:
  google_finance (call_8m0txCtxNuQaAv9UlomPhSA1)
 Call ID: call_8m0txCtxNuQaAv9UlomPhSA1
  Args:
    query: Google
================================= Tool Message =================================
Name: google_finance


Query: Google
stock: GOOGL:NASDAQ
price: $159.96
percentage: 0.94
movement: Up
us: price = 42210.57, movement = Down
europe: price = 23638.56, movement = Up
asia: price = 38183.26, movement = Up

================================== Ai Message ==================================

Google's stock, listed as GOOGL on NASDAQ, is currently priced at $159.96, with a movement up by 0.94%.
Edit this page on GitHub or file an issue.
Connect these docs to Claude, VSCode, and more via MCP for real-time answers.