Access to classes

[Lusi]

Hello,

first thanks for keeping this forum

I've read the previous post about classes but I can't understand how to access classes in owl :

I load my ontology:
(1) onto = get_ontology("root-ontology.owl").load()

When I try to visualize what is in it it works well :
(2) print(list(onto.classes())[:10])

but I don't understand if the names returned by (2) are the labels of the classes or their name
it looks like this : root-ontology.__class_name__

I read about Namespaces so I tried to load the iris base :
(3) obo = onto.get_namespace(onto.base_iri)

But I can't access classes by obo either.

My goal is pretty simple, I want to access parents or children of a given class.



Thanks a lot, have a good week,

Lucas

[Jiba]

Hello,

If your classes are in the OBO namespace, you need to create the namespace with the OBO IRI, e.g.:

obo = get_namespace("http://purl.obolibrary.org/obo/")

then you can do obo.classname.

Jiba

[Lyle]

I also lost a bit of time on this as well. Considering how common it will be to load obo ontologies, I think it would be helpful to have an example of this in the "Introduction" section of the documentation.

[Jiba]

Added!

Jiba