如何在openpyxl更新后将数据框追加到现有的excel工作表中(而不覆盖它)？

from openpyxl import load_workbook
from openpyxl.utils.dataframe import dataframe_to_rows

workbook = load_workbook('path_to_excel_file.xlsx')

worksheet = workbook['sheet_name']

dataframe_rows = list(dataframe_to_rows(dataframe, index=False, header=False))

start_row = worksheet.max_row + 1

for row in dataframe_rows:
    worksheet.append(row)

workbook.save('path_to_updated_excel_file.xlsx')