fix: change the prefix for https://schema.org/ back to schema

[aucampia]

Summary of changes

The default prefix for https://schema.org/ registered with rdflib.namespace.NamespaceManager was inadvertently changed to sdo in 6.2.0, this however constitutes a breaking change, as code that was using the schema prefix would no longer have the same behavior. This change changes the prefix back to schema.

Checklist

• Checked that there aren't other open pull requests for
  the same change.
• Added tests for any changes that have a runtime impact.
• Checked that all tests and type checking passes.
• Considered granting push permissions to the PR branch,
  so maintainers can fix minor issues and keep your PR up to date.

[coveralls]

Coverage: 90.792%. Remained the same when pulling a65bfeb on aucampia:iwana-20230325T1152-sdo_schema into 832e693 on RDFLib:main.

[ghost]

👍

[tobiasschweizer]

I really liked that you changed the default prefix back to sdo (no TLS) previous to RDFlib 6.3.2 ;-)

Is there an easy way to override the default? I got this hint once but never tried it (lazy me).

Background: We are still using (edited) http://schema.org (no TLS) in our SHACL shapes and Ontospy to document them. everything is fine in the RDF sense but schema1 simply looks odd in the docs.

[aucampia]

I really liked that you changed the default prefix back to sdo (no TLS) previous to RDFlib 6.3.2 ;-)

Is there an easy way to override the default? I got this hint once but never tried it (lazy me).

Background: We are still using (edited) http://schema.org (no TLS) in our SHACL shapes and Ontospy to document them. everything is fine in the RDF sense but schema1 simply looks odd in the docs.

If you create a graph with Graph(bind_namespaces='none') then it won't bind schema, but it also won't bind many other things. There is also bind_namespaces='core'.

You can see more details here - the bind_namespaces from Graph(...) is passed to this class.

[tobiasschweizer]

@aucampia Great, thanks for the clarification!