app.py

import streamlit as st 
import time 
def main(): 
    st.title("File Upload and Display") # File upload 
    uploaded_file = st.file_uploader("Upload a file") 
    
    if uploaded_file is not None: # Display file contents using st.markdown() 
        file_contents = uploaded_file.read().decode("utf-8") 
        st.markdown("### File Contents:") 
        st.markdown(f"```{file_contents}```") 
    
    # Wait for 5 seconds 
    time.sleep(5) # Show completed message 
    st.success("File processing completed!") 

if __name__ == "__main__": 
    main()