Update app.py

app.py

@@ -1,2 +1,17 @@
-import streamlit as st
-st.markdown('Hello world!')
+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()