对比两个excel文件，不同内容写入txt文件

def find_difference_bwteen_two_xls(excel1,excel2):
    excel1 = xlrd.open_workbook(excel1)
    excel2 = xlrd.open_workbook(excel2)
    excel1_sheet1 = excel1.sheet_by_index(0)
    excel2_sheet1 = excel2.sheet_by_index(0)
    rows = excel1_sheet1.nrows
    cols = excel1_sheet1.ncols
    with open("resulst.txt","a") as f:
        # 遍历excel文件
        for i in range(rows):
            for j in range(cols):
                 v1 = excel1_sheet1.cell_value(i,j)
                 v2 = excel2_sheet1.cell_value(i,j)
                 if v1 != v2:
                     f.write('第%d行%d列单元内容不同：excel1中为%s，excel2中为%s\n'%(i+1,j+1,v1,v2))

find_difference_bwteen_two_xls('testdata1.xls','testdata2.xls')