app.py

import streamlit as st

def get_text(): #from the UI App
    input_text = st.text_input("Enter a question: ", key="input")
    return input_text
    
#UIApp starts here
st.set_page_config(page_title="LangChain Demo - Simple Question Answering App", page_icon=":robot:")
st.header("Simple Question Answering App")

user_input=get_text()
response=load_answer(user_input)

submit=st.button('Generate')
if submit:
    st.subheader("Answer: ")
    st.write(response)