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main.py
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main.py
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import os
import dotenv
from azure.identity import DefaultAzureCredential
from fastapi import FastAPI
from fastapi.responses import RedirectResponse
from langchain import agents, hub
from langchain_azure_dynamic_sessions import SessionsPythonREPLTool
from langchain_openai import AzureChatOpenAI
dotenv.load_dotenv()
app = FastAPI()
@app.get("/")
async def root():
return RedirectResponse("/docs")
@app.get("/chat")
async def chat(message: str):
credential = DefaultAzureCredential()
pool_management_endpoint = os.getenv("POOL_MANAGEMENT_ENDPOINT")
openai_api_key = credential.get_token(
"https://cognitiveservices.azure.com/.default"
).token
llm = AzureChatOpenAI(
api_key=openai_api_key,
azure_deployment="gpt-35-turbo",
openai_api_version="2024-02-01",
openai_api_type="azure_ad",
temperature=0,
)
repl = SessionsPythonREPLTool(pool_management_endpoint=pool_management_endpoint)
tools = [repl]
prompt = hub.pull("hwchase17/openai-functions-agent")
agent = agents.create_tool_calling_agent(llm, tools, prompt)
agent_executor = agents.AgentExecutor(
agent=agent, tools=tools, verbose=True, handle_parsing_errors=True
)
response = agent_executor.invoke({"input": message})
return {"output": response["output"]}