通过azure函数生成的Excel文件似乎已损坏

我能够使用python生成excel，使用：

    df = pd.DataFrame(columns =["test"])
    writer = pd.ExcelWriter(f'{basepath}/Summary.xlsx', engine='xlsxwriter')
    df.to_excel(writer,engine='openpyxl',sheet_name= 'Sample')
    writer.save()

但当我尝试使用azure函数和HTTP触发器触发它时，下载的excel显示：

以下是我一直使用的代码：

    df = pd.DataFrame(columns =["test"])
    writer = pd.ExcelWriter(f'{basepath}/Summary.xlsx', engine='xlsxwriter')
    df.to_excel(writer,engine='openpyxl',sheet_name= 'Sample')
    writer.save()
    response = func.HttpResponse(body=None,headers={'Content-Disposition':'attachment; filename='f'{basepath}/Summary.xlsx'}, mimetype='application/vnd.ms-excel')
    return response

---

请尝试使用以下代码：

    df = pd.DataFrame(columns =["test"])
    writer = pd.ExcelWriter(f'{basepath}/Summary.xlsx', engine='xlsxwriter')
    df.to_excel(writer,engine='openpyxl',sheet_name= 'Sample')
    writer.save()

    with open(f'{basepath}/Summary.xlsx', "rb") as file:
        return func.HttpResponse(body=file.read(),headers={'Content-Disposition':'attachment; filename='f'{basepath}/Summary.xlsx'}, mimetype='application/vnd.ms-excel')