#给实体赋予属性
from py2neo import Node, Relationship

a = Node('Person', name='Alice')
b = Node('Person', name='Bob')
r = Relationship(a, 'KNOWS', b)
a['age'] = 20
a.setdefault('location', '北京')
# a['location'] = '上海'
b['age'] = 21
r['time'] = '2017/08/31'
print(a, b, r)