如何从Google Cloud Datastore查询中的每个实体获取游标？

from google.cloud import datastore

client = datastore.Client()

query = client.query(kind='YourEntityKind')
iterator = query.run()

for entity in iterator:
    # 处理实体
    print(entity)
    
    # 获取当前实体的游标
    cursor = iterator.cursor()
    print(f"Cursor: {cursor}")

from google.cloud import datastore

client = datastore.Client()

query = client.query(kind='YourEntityKind')
iterator = query.fetch_page(10)  # 每页获取10个实体

while True:
    page = iterator.page
    for entity in page:
        # 处理实体
        print(entity)
    
    if iterator.next_page_token is None:
        break
    
    # 获取下一页的游标
    cursor = iterator.cursor
    print(f"Cursor: {cursor}")
    iterator = query.run(start_cursor=cursor)