app.py

import streamlit as st
from langchain_openai.chat_models import ChatOpenAI

st.title("🦜🔗 Quickstart App")

openai_api_key = st.sidebar.text_input("OpenAI API Key", type="password")


def generate_response(input_text):
   model = ChatOpenAI(temperature=0.7, api_key=openai_api_key)
   st.info(model.invoke(input_text))


with st.form("my_form"):
   text = st.text_area(
       "Enter text:",
       "What are the three key pieces of advice for learning how to code?",
   )
   submitted = st.form_submit_button("Submit")
   if not openai_api_key.startswith("sk-"):
       st.warning("Please enter your OpenAI API key!", icon="⚠")
   if submitted and openai_api_key.startswith("sk-"):
       generate_response(text)