Python 如何使用win32com退出Excel，而不保存？

当我执行xl.Quit（）时，Excel总是弹出提示，询问我是否要保存。你怎么告诉它我不想存钱

xl = Dispatch('Excel.Application')
xl.Workbooks.Open('New Workbook.xlsx')
# do some stuff

xl.Quit()

from win32com.client import Dispatch

# Start excel application
xl = Dispatch('Excel.Application')

# Open existing excel file
book = xl.Workbooks.Open('workbook.xlsx')

# Some arbitrary excel operations ...    

# Close excel application without saving file
book.Close(SaveChanges=False)
xl.Quit()