Update app.py

app.py

@@ -1,3 +1,24 @@
 import streamlit as st
+import time
 
-st.markdown("Hello World!")
+def main():
+    st.title("File Upload and Display")
+
+    # File upload section
+    uploaded_file = st.file_uploader("Upload a file")
+
+    if uploaded_file is not None:
+        # Read the contents of the file
+        file_contents = uploaded_file.read()
+
+        # Display the contents using st.markdown()
+        st.markdown(file_contents)
+
+    # Wait for 5 seconds
+    time.sleep(5)
+
+    # Show completed message
+    st.write("File upload completed!")
+
+if __name__ == "__main__":
+    main()