Update app.py

app.py

@@ -141,21 +141,20 @@ def main():
     if uploaded_file is not None:
         try:
             # Step 1: Read the Excel file into a DataFrame
-            df = pd.read_excel(uploaded_file)
+            df = pd.read_excel(uploaded_file, header=0)
 
             # Step 2: Manually handle duplicate columns
-            def make_unique(column_name, existing_columns):
-                counter = 1
-                new_name = column_name
-                while new_name in existing_columns:
-                    new_name = f"{column_name}_{counter}"
-                    counter += 1
-                return new_name
-
-            unique_columns = []
-            for col in df.columns:
-                unique_columns.append(make_unique(col, unique_columns))
-            df.columns = unique_columns
+            def make_unique(column_names):
+                seen = {}
+                for i, column in enumerate(column_names):
+                    if column not in seen:
+                        seen[column] = 1
+                    else:
+                        seen[column] += 1
+                        column_names[i] = f"{column}_{seen[column]}"
+                return column_names
+
+            df.columns = make_unique(list(df.columns))
 
             # Step 3: Replace student names with initials
             df = replace_student_names_with_initials(df)