python Excel追加数据

from xlutils.copy import copy
import xlrd
import os

def write_append(file_name):
    values = ['张三','男',22]
    r_xls = xlrd.open_workbook(file_name) #打开Excel文件读取数据

    r_sheet = r_xls.sheet_by_index(0)  #通过索引顺序获取

    rows = r_sheet.nrows  #获取行数
    w_xls = copy(r_xls)
    sheet_write = w_xls.get_sheet(0)

    for i in range(0, len(values)):
        sheet_write.write(rows, i, values[i])

    w_xls.save(file_name)


if __name__ == "__main__":
    write_append("po.xls")