ontologos 0.5.0

Python bindings for the OntoLogos OWL reasoner (pre-release)

ontologos (PyPI)

Python bindings for OntoLogos — a modular Rust ontology reasoner for OWL EL, RL, and RDFS.

Alpha package (v0.5.0). See the full guide: docs/guides/python.md.

Capability	Rust v0.5	Python v0.5
In-memory ontology model	Yes (ontologos-core)	No
OWL file loading	Yes (ontologos-parser)	Partial (Reasoner(path) loads only)
Profile detection	Yes (ontologos-profile)	No
RDFS materialization	Yes (ontologos-rdfs)	Partial (Reasoner(path, profile="rdfs"))
OWL RL saturation	Yes (ontologos-rl)	Partial (Reasoner(path, profile="rl"))
OWL EL taxonomy classification	Yes (ontologos-el)	Partial (Reasoner(path, profile="el") or "auto")
Full Python API	—	v0.9 / 1.0

For working Rust APIs today, use crates.io crates.

pip install ontologos

Pre-built wheels ship for Linux (x86_64, aarch64), macOS (Intel + Apple Silicon), and Windows (x64, ARM64). Python 3.10+ (abi3 wheel).

import ontologos

print(ontologos.__version__)

# Default profile="auto" routes EL/RL/RDFS by detected profile (v0.5+)
reasoner = ontologos.Reasoner("pizza.owl", profile="auto")
taxonomy = reasoner.classify()

reasoner = ontologos.Reasoner("family.owl", profile="rl")
reasoner.classify()

See the project README and ROADMAP for milestones.