前提是要有 採集閾值報表.xls 這個檔案，並且不是開啟狀態，要不會報錯

    def set_style(name, height):
        """ 設定單元格樣式 """
        style = xlwt.XFStyle()  # 初始化樣式
        font = xlwt.Font()  # 為樣式建立字型
        font.name = name  # 'Times New Roman'
        font.bold = False
        font.color_index = 4
        font.height = height
        style.font 
 
= font
        return style

    def write_xls():
        """寫入Excel"""
        data_post_list = data_post_list()   #此處為資料 格式為列表包字典  [{'a':1,'b':2,'c':3,'d':4,'e':5,'f':6,'g':7},{'a':1,'b':2,'c':3,'d':4,'e':5,'f':6,'g':7}]
        # 建立工作簿
        f = xlwt.Workbook()
        # 建立sheet1
        sheet1 = f.add_sheet(u'
 
sheet1', cell_overwrite_ok=True)  # 建立sheet
        # 表格樣式
        default = set_style('Times New Roman', 240)
        # 生成表頭
        row0 = [u'裝置名稱', u'裝置IP', u'監測點', u'採集頻率', u'當前值', u'最新採集時間', u'危險閾值', u'故障閾值']
        for i in range(0, len(row0)):
            sheet1.write(0, i, row0[i], default)
            sheet1.col(i).width 
 
= 256 * 25  # 設定列寬

        # 寫Excel
        row_index = 1
        for i in data_post_list:
            col_index = 0
            for j in i:
                sheet1.write(row_index, col_index, i[j], default)
                col_index = col_index + 1
            row_index = row_index + 1

        # 儲存檔案
        t = time.strftime('%Y%m%d%H%M%S', time.localtime(time.time()))
        savepath = r'/data/app/DOIM/Server/webexpress/hdoc/tmp/' + t + '採集閾值報表.xls'
        f.save(savepath)
        return mx_success('請求成功！寫入Excel成功！檔案：', t + '採集閾值報表.xls')