Owlready

This is a forum and mailing list for Owlready2. Owlready2 is a module for ontology-oriented programming in Python 3, including OWL parsers and an optimized RDF quadstore.

Links: Website -- Owlready2 on BitBucket (development repository) -- Owlready2 on PyPI (Python Package Index, stable release) -- Documentation

If you use Owlready2 in scientific works, please cite the following article:
Lamy JB.
Owlready: Ontology-oriented programming in Python with automatic classification and high level constructs for biomedical ontologies.
Artificial Intelligence In Medicine 2017;80:11-28

You may also be interested by my book on Python and ontologies, available in English and French (click on the cover on the right).

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Adding new properties to classes of ontology to a file by KZ

by Jiba

Accessing class by its name in owlready2 by KZ

by Jiba

Dynamic annotations by Mathias Millet

by Jiba

Forward Declarations bug? by rdk

by Jiba

Automate Ontology Metadata by rdk

by rdk

Cardinality restrictions by Rusne

by Jiba

Onto.search(link = "*") not retrieving anything by Frack

by Frack

How to create SKOS annotations for an individual and blank node use owlready2 by zhiwei

by zhiwei

ontology merging by Jui Guram

by gp

TypeError: metaclass conflict: by Aleftina

by Aleftina

Error while loading owlready2 by Pradip

by Ulrich18

Using a SPARQL Processor/Engine for multiple queries by IWilliams

by Jiba

calling onto.object_properties giving error by Pradip

by Jiba

Creating data property dynamically by Jui Guram

by Jiba

How to import instances and its corresponding property values from database to an ontology by jui guram

by Jiba

owlready does not import all of the SSN and SOA classes? by Waseem85

by Jiba

Relating one class to another class by object properties or relations (equivalent of SWRL rules in Owlready) by rahul_raj

by Jiba

Can't find ObjectProperty instance when adding classes dynamically by Bob van 't Padje

by Bob van 't Padje

onto.individuals() looking for individuals in imported ontologies by gp

by Jiba

Using Blazegraph as database by Bob van 't Padje

by Jiba

Storing ontology in graph database by Bob van 't Padje

by Jiba

Error using API with Heroku by Frack

by Frack

The great table of formal ontology notations by Jiba

by rdk

Dynamically add restrictions after creation of class by ap

by supun

Possible issues and solutions for loading specific Owl file by wanghewen

by wanghewen

Owlready2 parsing error with sync_reasoner by tharindu_mp

by Jiba

ERROR: The system cannot find the owl file specified by yashodasw

by yashodasw

Importing and saving ontology files by Waseem85

by Waseem85

Is there any way to capture sync_reasoner() output to txt? by Tania

by Tania

owlready keep adding classes into the existing ontology while using load() by Waseem85

by Waseem85

EYE Reasoner + N3 by rdk

by Jiba

loading CIDOC CRM fails by sennierer

by sennierer

Adding value restrictions on data properties by Lindsay

by Lindsay

Adding properties to individual given its python instance (ie. of the property) by gp

by Jiba

searching classes by label in obi by gp

by gp

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