py2neo用法

from py2neo import Graph,Node,Relationship
 
##连接neo4j数据库，输入地址、用户名、密码
graph =Graph('http://localhost:7474',username='neo4j',password='08300734')
 
##创建结点
test_node_2 = Node(label='ru_yi_zhuan',name='皇帝')
test_node_1 = Node(label='ru_yi_zhuan,name='皇后')
test_node_3 = Node(label='ru_yi_zhuan',name='公主')
graph.create(test_node_1)
graph.create(test_node_2)
graph.create(test_node_3)
 
##创建关系
#分别建立了test_node_1指向test_node_2和test_node_2指向test_node_1两条关系，关系的类型为"丈夫、妻子"，两条关系都有属性count，且值为1。
node_1_zhangfu_node_1 = Relationship(test_node_1,'丈夫',test_node_2)
node_1_zhangfu_node_1['count'] = 1
node_2_qizi_node_1 = Relationship(test_node_2,'妻子',test_node_1)
node_2_munv_node_1 = Relationship(test_node_2,'母女',test_node_3)
node_2_qizi_node_1['count'] = 1
 
graph.create(node_1_zhangfu_node_1)
graph.create(node_2_qizi_node_1)
graph.create(node_2_munv_node_1)
 

# 查询节点
for edge in G.edges:
    nodea = matcher.match(edge[0]).first()
    nodeb = matcher.match(edge[1]).first()
    r = Relationship(nodea, 'connect', nodeb)
    graph.create(r)

# 更新/添加节点属性
a = Node("affiliations", aid = "0")
graph.create(a)
matcher = NodeMatcher(graph)
nodea = matcher.match(aid="0").first()
nodea["mid"] = "1"
graph.push(nodea)