pylpg

A Python Object Graph Mapper for labeled property graph databases.

Features

Simple model definition using Python type annotations
Multi-backend: Neo4j, FalkorDB, FalkorDBLite (embedded)
Session-based persistence with node binding
Transactional batch operations (Neo4j)
Node hydration from raw query results

Installation

pip install pylpg[neo4j]        # Neo4j
pip install pylpg[falkordb]     # FalkorDB
pip install pylpg[falkordblite] # FalkorDBLite (embedded, no server)

Quick example

import pylpg.node
import pylpg.relationship
import pylpg.session
import pylpg.backend.neo4j

class Person(pylpg.node.Node):
    name: str
    age: int | None = None

class Knows(pylpg.relationship.Relationship):
    __type__ = "KNOWS"
    since: str | None = None

backend = pylpg.backend.neo4j.Neo4jBackend(
    hostname="localhost",
    username="neo4j",
    password="password",
)

with pylpg.session.Session(backend) as session:
    alice = Person(name="Alice", age=30)
    bob = Person(name="Bob")
    session.save(alice)
    session.save(bob)

    rel = Knows(source=alice, target=bob, since="2024")
    session.save(rel)

Documentation

Full documentation is available at https://adrienrougny.github.io/pylpg/.

License

GPLv3. See LICENSE for details.

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