Update app.py

app.py

@@ -140,12 +140,15 @@ def main():
         try:
             # Read the Excel file into a DataFrame
             df = pd.read_excel(uploaded_file)
+            
+            # Rename duplicate columns
+            df = df.rename(columns=lambda x: x if not df.columns.duplicated()[list(df.columns).index(x)] else f"{x}_{list(df.columns[:list(df.columns).index(x)]).count(x)+1}")
 
             # Replace student names with initials
             df = replace_student_names_with_initials(df)
 
             st.subheader("Uploaded Data")
-            st.write(df.head(4))  # Display only the first four rows
+            st.write(df)
 
             # Ensure expected column is available
             if INTERVENTION_COLUMN not in df.columns: