py2neo文档： https://py2neo.org/v4/index.html
安装：
pip install py2neo
本文用的版本是：
py2neo 4.1.3
代码示例
# -*- coding: utf-8 -*- from py2neo import Graph, Node, Relationship, NodeMatcher from py2neo.matching import RelationshipMatcher # 连接数据库 graph = Graph("http://localhost:7474", username="neo4j", password='123456') # 创建节点 p1 = Node("Person", name="张三") p2 = Node("Person", name="李四") graph.create(p1) graph.create(p2) # 创建关系 r = Relationship(p1, "认识", p2) graph.create(r) # 节点查询 mather = NodeMatcher(graph) result = mather.match("Person", name="张三").first() print(result) # (_0:Person {name: '\u5f20\u4e09'}) # 查询关系 relation_matcher = RelationshipMatcher(graph) ret = relation_matcher.match((result,), r_type="认识").first() print(ret) # (张三)-[:认识 {}]->(李四) # 直接运行cypher语句 ret = graph.run('match(p:Person{name:"李四"}) return p').data() print(ret) # [{'p': (_3:Person {name: '\u674e\u56db'})}]
