app.py

import streamlit as st

# Title of the app
st.title("Hello App")

# Text input from user
name = st.text_input("Enter your name")

# Button to submit the input
if st.button("Submit"):
    if name:
        st.success(f"Hello, {name}!")
    else:
        st.warning("Please enter your name.")

# Clear button
if st.button("Clear"):
    st.rerun()  # Updated from st.experimental_rerun() to st.rerun()