app.py

import streamlit as st
import time

def main():
    st.title("Simple Streamlit Program")

    # Wait for 5 seconds
    with st.spinner("Waiting for 5 seconds..."):
        time.sleep(5)
    st.success("Completed!")

    # File Upload
    st.header("File Upload")
    uploaded_file = st.file_uploader("Upload a file")

    if uploaded_file is not None:
        file_contents = uploaded_file.read()
        st.markdown("### File Contents")
        st.markdown(f"```{file_contents.decode('utf-8')}```")

if __name__ == "__main__":
    main()