Update app.py

app.py

@@ -52,6 +52,12 @@ except:
 # Streamlit app title and description
 st.title("PAAD Survival Prediction Submission Portal")
 
+# Streamlit warning message at the top of the app
+st.warning("Your CSV file must only contain the following columns:\n\n"
+           "- `patient_id`: Unique identifier for each patient matching the patient_id in the test set\n"
+           "- `predicted_scores`: Predicted survival scores from your model\n\n"
+           "Please ensure your file follows this format before uploading.")
+
 # Form to upload CSV file
 with st.form("submission_form"):
     username = st.text_input("Username", max_chars=20)