如何点火YesNo Alert Box？

import tencentcloud
from tencentcloud.common import credential
from tencentcloud.common.profile.client_profile import ClientProfile
from tencentcloud.common.profile.http_profile import HttpProfile
from tencentcloud.yesnoalertbox.v20210323 import yesnoalertbox_client, models

# 实例化一个认证对象，入参需要传入腾讯云账户secretId，secretKey
cred = credential.Credential("secretId", "secretKey")

# 实例化一个http选项，可选的，没有特殊需求可以跳过
httpProfile = HttpProfile()
httpProfile.endpoint = "yesnoalertbox.tencentcloudapi.com"

# 实例化一个client选项，可选的，没有特殊需求可以跳过
clientProfile = ClientProfile()
clientProfile.httpProfile = httpProfile

# 实例化要请求产品的client对象
client = yesnoalertbox_client.YesnoalertboxClient(cred, "region", clientProfile)

# 实例化一个请求对象
req = models.YesNoAlertBoxRequest()

# 设置请求参数
req.Title = "是否确认点火？"
req.Text = "点火操作将会导致系统启动，请谨慎操作。"
req.YesButtonText = "确认点火"
req.NoButtonText = "取消点火"

# 通过client对象调用DescribeInstances方法发起请求，并获取请求结果
resp = client.YesNoAlertBox(req)

# 输出请求结果
print(resp.to_json_string())