app.py

import streamlit as st
import time

def main():
    st.title("Streamlit Example")

    st.write("Waiting for 5 seconds...")
    time.sleep(5)
    st.write("Completed!")

    uploaded_file = st.file_uploader("Upload a file :)")

    if uploaded_file is not None:
        content = uploaded_file.read().decode("utf-8")
        st.markdown(content)

if __name__ == "__main__":
    main()