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本笔记本介绍了如何使用 Google Finance 工具从 Google Finance 页面获取信息。 要获取 SerpApi 密钥,请在以下网址注册:serpapi.com/users/sign_up 要将此工具与 LangChain 结合使用,请安装以下包
pip install -qU google-search-results langchain-community
Note: you may need to restart the kernel to use updated packages.
然后将环境变量 SERPAPI_API_KEY 设置为您的 SerpApi 密钥,或者将密钥作为参数传递给包装器 serp_api_key=“您的秘密密钥”。
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'
为了创建一个使用 Google Finance 工具的代理,请安装 LangGraph
pip install -qU langgraph langchain-openai
Note: you may need to restart the kernel to use updated packages.
并使用 create_agent 功能初始化 ReAct 代理。您还需要设置您的 OPEN_API_KEY(访问 platform.openai.com)才能访问 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-4o-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%.

以编程方式连接这些文档到 Claude、VSCode 等,通过 MCP 获取实时答案。
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