app.py

#import json

from flask import Flask,request
from dotenv import load_dotenv

from langchain_openai import ChatOpenAI

# Initializing flask app
app = Flask(__name__)
load_dotenv()

@app.route('/', methods=['GET','POST'])
def index():
    llm = ChatOpenAI()
    response=llm.invoke("how can langsmith help with testing?")
    print(response)

    return {"response":"just some junk response"}