Neo4j检查关系Python

from neo4j import GraphDatabase

# 连接Neo4j数据库
uri = "bolt://localhost:7687"
driver = GraphDatabase.driver(uri, auth=("username", "password"))

# 定义查询函数
def check_relationship():
    with driver.session() as session:
        # 执行查询语句
        result = session.run(
            "MATCH (n1)-[r]->(n2) RETURN n1, r, n2"
        )
        
        # 处理查询结果
        for record in result:
            n1 = record["n1"]
            r = record["r"]
            n2 = record["n2"]
            
            # 打印关系信息
            print(f"关系: {n1} - {r} - {n2}")

# 调用查询函数
check_relationship()

# 关闭数据库连接
driver.close()