Owlready2 0.9 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 allows the use of PostgresQL instead of SQLite3 (however, performances are usually lower). It also facilitate the access to SOME restrictions on classes, using the dotted notation "class.property".

Here are the changes in version 0.9:

  • PostgresQL backend (in addition to SQLite3)

  • Add 'exclusive = False' option for SQLite3 backend (slower, but allows multiple uses)

  • Use unique index in sqlite3 quadstore on resources table

  • Optimize sqlite3 quadstore by caching IRI dict (5% faster)

  • Add == support for class construct

  • Add get_namespace() support on World

  • Add 'existential restrictions as class properties' feature

  • Bugfixes: - Fix imported ontologies - Fix saving ontologies in onto_path - Fix clear() on CallbackList - Fix bug in Class IRI in ontologies whose base IRI ends with a / - Fix imported ontologies in ontologies whose base IRI ends with a /

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

The great table of ontologies

This big table summarize 5 notations used with formal ontologies in OWL: description logics, the syntax of the Protégé editor, the syntax of Owlready2 in Python, and the semantics in first-order logic and in set formula. Keep on hand when working on formal ontologies!

You can download the great table of ontologies.

Owlready2 0.8 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.

Here are the changes in versions 0.6, 0.7 and 0.8 (the first two have lasted only a few hours):

  • Add set_datatype_iri() global function for associating a Python datatype to an IRI

  • Add nquads ontology format (useful for debugging)

  • Add support for dir() on individuals

  • Add support for ontology using https: protocol (thanks Samourkasidis Argyrios)

  • Add observe module (for registering callback when the ontology is modified)

  • Improve docs

  • Bugfixes: - Align Python floats with xsd:decimal rather than xsd:double, finally, because decimal accepts int too - Fix Class.instances() so as it returns instances of subclasses (as indicated in the doc) - Fix direct assignation to Ontology.imported_ontologies - Fix a bug in reasoning, when adding deduced facts between one loaded and one non-loaded entity - Fix search(prop = "value") when value is a string and the ontology uses localized string

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

Owlready2 0.5 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 is mostly a bugfix release.

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

EditObj 3 0.1 is out !

This is the first stable release of EditObj 3.

It is a full rewrite of EditObj 2, and it now supports Qt and HTML.

It is available on PyPI (Python Package Index).

Songwrite 3 0.1

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Songwrite 3 0.1 is out ! This version is a full rewrite with Python 3 and Qt. Enjoy!

It is available on PyPI (Python Package Index) and can be installed under Linux with pip:

pip3 install songwrite3

Before that, do not forget to install Python3, pip and PyQt5 from your Linux distribution.

Owlready2 0.4 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.

The main new features of version 2 - 0.4 are:

  • the defined relations can be queried for a given individual (using the .get_properties(), .get_inverse_properties() and .get_relations() methods)

  • improvement of the .search() method, which now takes into account inheritance and inverse relations

  • optimisation of recursive request in SQL

  • several bug fixes

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

PyPI download statistics available!

No official download statistics are available for PyPI (the Python Package Index).

I've managed to extract the download statistics for all Python modules, on a per-month basis, since may 2016.

The method is described here, and the entire dataset can be downloaded as a CSV file.

Owlready2 0.3 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.

The 2 - 0.3 version of Owlready is mostly a bugfix release. It also add the ability to destroy entities from ontologies.

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

Owlready2 0.2 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.

The 2 - 0.2 version of Owlready now includes a RDF/XML written in Python. This parser can load big files rapidly.

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

Owlready2 0.1 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.

The 2 - 0.1 version of Owlready is a full rewrite that integrates an optimized RDF quadstore. It can now load big ontologies (several millions of RDF triples).

It can be downloaded from PyPI (Python Package Index): https://pypi.python.org/pypi/Owlready2

Towards Owlready 2...!

Owlready is a Python module for ontology-oriented programming. The version 2 currently under development keep the functionalities of the first version, but now relies on an optimized RDF quadstore in SQL. This version is now able to load big ontologies (several millions of RDF triples) with good performances.

The development version of Owlready2 is available here: https://bitbucket.org/jibalamy/owlready2

ORMithorynque 0.1.1 has been released!

ORMithorynque is an ORM Python module (object database).

ORMithorynque 0.1.1 has been released and can be downloaded from PyPI (Python Package Index): https://pypi.python.org/pypi/ORMithorynque

Using Webex on ArchLinux

Webex is a videoconference system from Cisco. It works under Linux but it is only available in 32 bits... This tuto explains how to use it under ArchLinux 64 bits.

1- Install Firefox (32 bits), Java (32 bits) and Webex 32 bits dependencies

Install the 32 bits version of Firefox, Java, and the 32 bits libraries needed by Webex. For ArchLinux, you need to install AUR package bin32-firefox, bin32-jre, webex-meta.

2- Test Java in Firefox

Launch Firefox 32 bits and test the java installation from this page: https://java.com/en/download/installed8.jsp

If the Java plugin is not found by Firefox, verify the plugin presence (file /usr/lib32/mozilla/plugins/libnpjp2-jre8.so) and start Firefox after specifying the plugin directory, as following :

MOZ_PLUGIN_PATH=/usr/lib32/mozilla/plugins/ /usr/lib32/bin32-firefox/firefox32

3- Test Webex

Test Webex from this page : https://www.webex.com/test-meeting.html

Attention, seeing the interface is not enough to garantee that everything is OK. You need to wait until you see the following screen :

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