py2neo-history

import os from py2neo import Graph, Node, Relationship # Ensure Neo4j is running and accessible uri = os.environ.get("NEO4J_URI", "bolt://localhost:7687") username = os.environ.get("NEO4J_USERNAME", "neo4j") password = os.environ.get("NEO4J_PASSWORD", "password") try: graph = Graph(uri, auth=(username, password)) # Verify connection and run a simple query result = graph.run("CREATE (a:Person {name: 'Alice'}) RETURN a.name AS name").data() print(f"Connected to Neo4j. Query result: {result}") # Create nodes and a relationship alice = Node("Person", name="Alice") bob = Node("Person", name="Bob") knows = Relationship(alice, "KNOWS", bob) graph.create(knows) print("Created Alice, Bob, and a KNOWS relationship.") # Fetch all Person nodes people = graph.run("MATCH (p:Person) RETURN p.name").data() print("People in the database:") for p in people: print(f"- {p['p.name']}") except Exception as e: print(f"Error connecting to or querying Neo4j: {e}")