app.py

import streamlit as st
import time

def main():
    st.title("File Upload Example")

    # File upload
    uploaded_file = st.file_uploader("Upload a file", type=["txt", "csv"])

    if uploaded_file is not None:
        # Read file contents
        file_contents = uploaded_file.read().decode("utf-8")

        # Display file contents
        st.markdown("### File Contents:")
        st.markdown(file_contents)

    # Wait for 5 seconds
    time.sleep(5)

    # Display completed message
    st.write("Task completed!")

if __name__ == "__main__":
    main()