我试图遍历一个图使用
from neo4jrestclient.client import GraphDatabase
G = GraphDatabase("http://localhost:7474/db/data/")
# G is generated here in my program but for space purpose I removed these steps
traverser = G.traversal().evaluator(my_evaluator).traverse(root)
我从stackoverflow借了my_evaluator函数,它是
def my_evaluator(path):
# Filter on end node property
if path.end['value'] == 105:
return Evaluation.INCLUDE_AND_CONTINUE
# Filter on last relationship type
if path.last_relationship.type.name() == 'edge':
return Evaluation.INCLUDE_AND_PRUNE
# You can do even more complex things here, like subtraversals.
return Evaluation.EXCLUDE_AND_CONTINUE
当我尝试执行代码时,我收到以下错误消息: Traceback(最近一次调用最后一次):文件“C:\Users\firas\Desktop\ACO_neo4j.py”,第 747 行,在 traverser = G.traversal() 中。 evaluator(my_evaluator).traverse(root) AttributeError: 'TraversalDescription' 对象没有属性 'evaluator'
你能帮我吗?谢谢。
菲拉斯