app.py

# Q&A chatbot

from langchain.llms import OpenAI
from dotenv import load_dotenv
import streamlit as st
import os

# take environment variables from .env
load_dotenv()

# Function to load OpenAI model and get response

def get_openai_reponse(question):
    llm = OpenAI(openai_api_key=os.getenv("OPEN_API_KEY"), model_name='text-davinci-003', 
                 temperature=0.6)
    response = llm(question)
    return response

# initialize our streamlit app
st.set_page_config(page_title="Q&A Demo")
st.header("Langchain Application")

input = st.text_input("Input:", key = "input")
response = get_openai_reponse(input)

submit = st.button("Ask the question")

# If ask button is clicked
if submit:
    st.subheader("The response is: ")
    st.write(response)