python 生成并下载文件-后端

@app.route(‘/download‘, methods=[‘GET‘])
def download():
    content = "long text"
    response = make_response(content)
    response.headers["Content-Disposition"] = "attachment;     
    filename=myfilename.txt"
    return response

@app.route("/export",methods = [‘GET‘])
def export():
    out = BytesIO()
    workbook = xlsxwriter.Workbook(out)
    table = workbook.add_worksheet()
    table.write(0, 0, "第1列")
    table.write(0, 1, "第2列")
    table.write(0, 2, "第3列")
    table.write(0, 0, "name")
    table.write(1, 1, "sex")
    table.write(2, 2, "class")
    workbook.close()
    out.seek(0)
    filename = quote("Entity类下载.xlsx")
    rv = send_file(out, as_attachment=True, attachment_filename=filename)
    rv.headers[‘Content-Disposition‘] += "; filename*=utf-8‘‘{}".format(filename)
    return rv