def start_instance_example(self):
    cluster_id = 'your cluster id'
    instance_id = 'your instance id'
    response = client.start_instance(cluster_id=cluster_id, instance_id=instance_id) 
    if response.success:
        # 执行成功
        print(response.status)  # http响应码
    else:
        # 执行失败
        print(
            response.status,  # http响应码
            response.code,    # 错误码
            response.error.message  # 报错信息
        )         
}

def stop_instance_example(self):
    cluster_id = 'your cluster id'
    instance_id = 'your instance id'
    response = client.stop_instance(cluster_id=cluster_id, instance_id=instance_id)   
    if response.success:
        # 执行成功
        print(response.status)  # http响应码
    else:
        # 执行失败
        print(
            response.status,  # http响应码
            response.code,    # 错误码
            response.error.message  # 报错信息
        )       
}