Update app.py

app.py

@@ -141,8 +141,11 @@ def main():
             # Read the Excel file into a DataFrame
             # df = pd.read_excel(uploaded_file)
 
-            # Read the Excel file into a DataFrame and handle duplicate columns automatically
-            df = pd.read_excel(uploaded_file, mangle_dupe_cols=True)
+            # Rename duplicate columns to make them unique
+            cols = pd.Series(df.columns)
+            for dup in cols[cols.duplicated()].unique():
+                cols[cols[cols == dup].index.values.tolist()] = [f"{dup}_{i+1}" if i != 0 else dup for i in range(sum(cols == dup))]
+            df.columns = cols
 
             # Replace student names with initials
             df = replace_student_names_with_initials(df)