Owlready2 0.10 has been released!

Owlready is a Python module for ontology-oriented programming. It can load OWL 2.0 ontologies and manipulate them transparently in Python.

This new version fixes many bugs and adds the support of ontology metadata. It also introduces the use of Cython, for improving performances when reading RDF/XML and OWL/XML files. Owlready2 is now able to read these files as fast as Java !

Here are the changes in version 0.10:

  • Add Ontology.metadata for adding/querying ontology metadata

  • Allows multiple individual creations with the same name/IRI, now returning the same individuals

  • Add OwlReadyInconsistentOntologyError and Word.inconsistent_classes()

  • Implement RDF/XML and OWL/XML parsing in Cython (25% speed boost for parsing)

  • Small optimization

  • Extend individual.prop.indirect() to include relations asserted at the class level

  • Add .query_owlready() method to RDF graph

  • Bugfixes: - Fix reasoning when obtaining classes equivalent to nothing - Fix World creation with backend parameters - Fix error when adding property at the class definition level - Fix loading of ontology files with no extension from onto_path - Fix properties defined with type 'RDF Property' and subproperty of 'OWL Data/Object/Annotation Property' - Support old SQLite3 versions that do not accept WITHOUT ROWID - Fix reference to undeclared entities (they were replaced by None, now by their IRI) - Fix loading and saving ontologies whose base IRI ends with / - Fix RDF query using string

The new version be downloaded from PyPI (Python Package Index): https://pypi.python.org/pypi/Owlready2