python怎么关闭指定的excel

import xlwt

workbook.save('excel名.xls')

col = ["房型", "早餐", "会员专享价", "房态", "操作"]

workbook = xlwt.Workbook(encoding="utf-8")

worksheet = workbook.add_sheet('sheet2', cell_overwrite_ok=True)

for c in col:   

#将列表名称导入表格

    worksheet.write(0, d, c)

    d += 1

workbook.save('sheet2.xls')