This repository contains the official Neo4j driver for Python. Each driver release (from 4.0 upwards) is built specifically to work with a corresponding Neo4j release, i.e. that with the same major.minor version number. These drivers will also be compatible with the previous Neo4j release, although new server features will not be available.

• Python 3.9 supported.
• Python 3.8 supported.
• Python 3.7 supported.
• Python 3.6 supported.
• Python 3.5 supported.

Python 2.7 support has been dropped as of the Neo4j 4.0 release.

To install the latest stable version, use:

pip install neo4j

from neo4j import GraphDatabase

driver = GraphDatabase.driver("neo4j://localhost:7687", auth=("neo4j", "password"))

def add_friend(tx, name, friend_name):
    tx.run("MERGE (a:Person {name: $name}) "
           "MERGE (a)-[:KNOWS]->(friend:Person {name: $friend_name})",
           name=name, friend_name=friend_name)

def print_friends(tx, name):
    for record in tx.run("MATCH (a:Person)-[:KNOWS]->(friend) WHERE a.name = $name "
                         "RETURN friend.name ORDER BY friend.name", name=name):
        print(record["friend.name"])

with driver.session() as session:
    session.write_transaction(add_friend, "Arthur", "Guinevere")
    session.write_transaction(add_friend, "Arthur", "Lancelot")
    session.write_transaction(add_friend, "Arthur", "Merlin")
    session.read_transaction(print_friends, "Arthur")

driver.close()

• The driver’s default configuration for encrypted is now false (meaning that driver will only attempt plain text connections by default).
• Connections to encrypted services (such as Neo4j Aura) should now explicitly be set to encrypted.
• When encryption is explicitly enabled, the default trust mode is to trust the CAs that are trusted by operating system and use hostname verification.
• This means that encrypted connections to servers holding self-signed certificates will now fail on certificate verification by default.
• Using the new neo4j+ssc scheme will allow to connect to servers holding self-signed certificates and not use hostname verification.
• The neo4j:// scheme replaces bolt+routing:// and can be used for both clustered and single-instance configurations with Neo4j 4.0.

See, https://neo4j.com/docs/migration-guide/4.0/upgrade-driver/#upgrade-driver-breakingchanges

See, https://neo4j.com/docs/driver-manual/current/client-applications/#driver-connection-uris for changes in default security settings between 3.x and 4.x

Using the Python Driver 4.x and connecting to Neo4j 3.5 with default connection settings for Neo4j 3.5.

# the preferred form

driver = GraphDatabase.driver("neo4j+ssc://localhost:7687", auth=("neo4j", "password"))

# is equivalent to

driver = GraphDatabase.driver("neo4j://localhost:7687", auth=("neo4j", "password"), encrypted=True, trust=False)

Using the Python Driver 1.7 and connecting to Neo4j 4.x with default connection settings for Neo4j 4.x.

driver = GraphDatabase.driver("neo4j://localhost:7687", auth=("neo4j", "password"), encrypted=False)

• The Neo4j Operations Manual
• The Neo4j Drivers Manual
• Python Driver API Documentation
• Neo4j Cypher Refcard
• Example Project
• Driver Wiki (includes change logs)
• Neo4j 4.0 Migration Guide