Rdflib 7.0.0: Inadequate Support for Importing Multiple Prefixes with the Same IRI and Base IRI

[hsekol-hub]

Rdflib 7.0.0: Inadequate Support for Importing Multiple Prefixes with the Same IRI and Base IRI

[WhiteGobo]

As a workaround you can write your second prefix directly into the default memory store.

from rdflib import Graph, Namespace, URIRef
EX = Namespace("http://example.org/")
g = Graph(bind_namespaces="none")
g.bind("ex", EX)
g.store._Memory__namespace["ex1"] = URIRef("http://example.org/")
print(list(g.namespaces()))
#[('ex', rdflib.term.URIRef('http://example.org/')), ('ex1', rdflib.term.URIRef('http://example.org/'))]

I havent tested this any further. So dont know if there will be any problems or other stores will behave in the same manner.

[nicholascar]

The base issue could be a real one and I will look into it when I'm back from holidays in a few weeks.

But the multi prefixes one is not! Sure, it's not a violation to want to have multiple prefixes for the same namespace and you do see it in data but prefixes are just presentation conveniences and I think that too much catering for every possible use of them overemphasises their role. They are not real data things and a single prefix for a namespace will always work, even when multiple are originally supplied in the data, or defined as per your code above.

So I'm not motivated to solve this one. And there is indeed a work around.

If it's really important to you, @hsekol-hub, please feel free to create a Pull Request to address it yourself.