python
from py2neo import Graph, Node, Relationship
graph = Graph("bolt://localhost:7687")
tx = graph.begin()
try:
node1 = Node("Person", name="Alice")
relationship = Relationship(node1, "FRIEND", Node("Person", name="Bob"))
tx.create(node1)
tx.create(relationship)
tx.commit()
except Exception as e:
tx.rollback()
print("Error:", e)
python
from py2neo import Graph
graph = Graph("bolt://localhost:7687")
result = graph.run("CALL algo.shortestPath.stream('Person', 'name', 'Alice', 'name', 'Bob', {weightProperty:'distance'}) "
"YIELD nodeId, cost RETURN algo.getNodeById(nodeId).name AS name, cost")
for record in result:
print(record["name"], record["cost"])
python
from py2neo import Graph
graph = Graph("bolt://localhost:7687")
graph.run("LOAD CSV WITH HEADERS FROM 'file:///data.csv' AS row "
"CREATE (:Person {name: row.name, age: row.age})")
graph.run("MATCH (p:Person) "
"RETURN p.name AS name, p.age AS age "
"INTO CSV 'file:///data.csv'")
