How to get the OWL data type assigned to a restriction?

[Akash]

Hello,

I have a restriction "hasIdentifier some xsd:string" placed on Class A.

How can I retrieve the OWL data type "xsd:string" from this restriction after loading the ontology using owlready?

Currently, I am able to do "ontology.ClassA.is_a[1].value" which gives me <class 'str'> in python. Just wondering if there is a way to get the original data type assigned in the owl file.

Thanks,
Akash

[Jiba]

Hi,

Owlready uses plain Python types to represent basic datatype, so str is the datatype.

If you want the IRI of the datatype, it is more complex... Owlready maintain a dictionary mapping Python types to IRI, but the IRI are abbreviated as integer. Thus you need to unabbreviate them. Here is an exemple :

>>> default_world._unabbreviate(owlready2.base._universal_datatype_2_abbrev[str])
'http://www.w3.org/2001/XMLSchema#string'

Jiba

[Akash]

Thanks for the help! This is exactly what I was looking for.