Your application variables james
and julie
won't automatically be created simply by creating nodes with a similar name
property. You haven't shared any of your py2neo code and I'm not familiar with bulbs but within py2neo you will need to do something like:
from py2neo import neo4j
graph_db = neo4j.GraphDatabaseService()
james, julie = graph_db.create(node(name="James"), node(name="Julie"))
graph_db.create(rel(james, "KNOWS", julie))
You could of course instead create both nodes and relationship in the same statement (and batch) if you preferred:
from py2neo import neo4j
graph_db = neo4j.GraphDatabaseService()
james, julie, friendship = graph_db.create(
node(name="James"), node(name="Julie"), rel(0, "KNOWS", 1)
)