如何检查BigQuery中是否存在数据集？

from google.cloud import bigquery

def check_dataset_exists(project_id, dataset_id):
    client = bigquery.Client(project=project_id)
    dataset_ref = client.dataset(dataset_id)

    try:
        client.get_dataset(dataset_ref)
        return True
    except Exception as e:
        if "Not found" in str(e):
            return False
        else:
            raise e

# 调用函数检查数据集是否存在
project_id = "your-project-id"
dataset_id = "your-dataset-id"
exists = check_dataset_exists(project_id, dataset_id)

if exists:
    print("数据集存在")
else:
    print("数据集不存在")