app.py

import streamlit as st
from transformers import pipeline

st.title("🌱 Sustainable Smart City Assistant")
st.write("Ask me about eco-friendly tips, traffic, waste collection, and more.")

assistant = pipeline("text2text-generation", model="google/flan-t5-large")

user_input = st.text_input("Type your question here:")

if user_input:
    prompt = f"You are a smart city assistant. Answer clearly.\n\nQuestion: {user_input}"
    response = assistant(prompt, max_length=100)[0]['generated_text']
    st.success(response)