Owlready2

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library 0.50 ·python
verified May 9, 2026

Owlready2 is a Python library for ontology-oriented programming, allowing users to load OWL 2.0 ontologies as Python objects, modify them, save them, and perform reasoning via the HermiT reasoner. It includes an optimized RDF quadstore. Current version is 0.50 (as of latest release) and it follows an irregular release cadence. Requires Python >=3.6.

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