如何在我的GraphDB存储库上从Python运行sparql查询？

from rdf4j.repository import Repository
from rdf4j.model import Literal, URI
from rdf4j.query import QueryLanguage
from rdf4j.repository.http import HTTPRepository

url = "http://localhost:7200/repositories/my-repo"  # 替换为你的GraphDB存储库URL
repository = HTTPRepository(url)

sparql_query = """
PREFIX foaf: <http://xmlns.com/foaf/0.1/>
SELECT ?name
WHERE {
  ?person foaf:name ?name .
}
"""

with repository as repo:
    with repo.get_connection() as conn:
        result = conn.prepareTupleQuery(QueryLanguage.SPARQL, sparql_query).evaluate()
        for binding_set in result:
            name = binding_set.getValue("name")
            print(name)