# 检查数据示例
本章节对检查数据AK/SK方式使用SDK进行示例说明。
检查数据示例代码只需将AK/SK信息替换为实际AK/SK，代码中可以使用初始化CheckParam中的item_id参数配置数据的服务实例级唯一标识，配置完成后运行即可。
1. 搜过图片调用示例代码如下：
   ```
   # coding: utf-8
   from huaweicloudsdkcore.auth.credentials import BasicCredentials
   from huaweicloudsdkcore.region.region import Region as coreRegion
   from huaweicloudsdkcore.exceptions import exceptions
   from huaweicloudsdkimagesearch.v2 import *
   if __name__ == "__main__":
       # 认证用的ak和sk硬编码到代码中或者明文存储都有很大的安全风险，建议在配置文件或者环境变量中密文存放，使用时解密，确保安全；
       # 本示例以ak和sk保存在环境变量中来实现身份验证为例，运行本示例前请先在本地环境中设置环境变量HUAWEICLOUD_SDK_AK和HUAWEICLOUD_SDK_SK。
       ak = os.getenv("HUAWEICLOUD_SDK_AK")
       sk = os.getenv("HUAWEICLOUD_SDK_SK")
       iamEndpoint = "https://iam.cn-north-4.myhuaweicloud.com"
       endpoint = "https://mms.cn-north-4.myhuaweicloud.com"
       projectId = "project_id"
       credentials = BasicCredentials(ak, sk, projectId) \
               .with_iam_endpoint(iamEndpoint)
       # 初始化客户端
       client = ImageSearchClient.new_builder() \
           .with_credentials(credentials) \
           # 设置region, 示例中为北京四
           .with_region(coreRegion(id="cn-north-4", endpoint=endpoint)) \
           .build()
       try:
           request = RunCheckDataRequest()
           request.service_name = "service_name"
           request.body = CheckParam(
               item_id="item_id"
           )
           response = client.run_check_data(request)
           print(response)
       except exceptions.ClientRequestException as e:
           print(e.status_code)
           print(e.request_id)
           print(e.error_code)
           print(e.error_msg)
   ```
   
2. 执行示例代码文件，控制台输出检查数据结果即表示程序执行成功。
   ```
   {
       "result": "success",
       "data": {
           "existed": true,
           "item_info": {
               "custom_tags": {
                   "key": "value"
               },
               "custom_num_tags": {
                   "key":"value"
               }
           }
       }
   }
   ```