tools4rdf#

tools4RDF is a Python toolkit designed to simplify working with RDF data, ontologies, and knowledge graphs. It provides user-friendly utilities for creating, manipulating, querying, and visualizing RDF data, making it easier to integrate semantic web technologies into your research and applications.

It is built on top of rdflib, and a primary function is the automated creation of SPARQL queries through an autocompleted programmatic interface.

Explore the examples below to get started with tools4rdf and see how it can accelerate your semantic data workflows!

A small example#

from tools4rdf import OntologyNetwork

Read in the FOAF ontology

onto = OntologyNetwork('http://xmlns.com/foaf/0.1/')

Explore terms, autocompletion works!

onto.terms.foaf.Person

/home/docs/checkouts/readthedocs.org/user_builds/tools4rdf/checkouts/fix_dc/tools4rdf/network/parser.py:289: UserWarning: foaf:isPrimaryTopicOf is a superproperty of foaf:homepage, but not found in attribute.
  warnings.warn(
/home/docs/checkouts/readthedocs.org/user_builds/tools4rdf/checkouts/fix_dc/tools4rdf/network/parser.py:289: UserWarning: foaf:isPrimaryTopicOf is a superproperty of foaf:openid, but not found in attribute.
  warnings.warn(
/home/docs/checkouts/readthedocs.org/user_builds/tools4rdf/checkouts/fix_dc/tools4rdf/network/parser.py:289: UserWarning: rdfs:label is a superproperty of foaf:name, but not found in attribute.
  warnings.warn(

foaf:Person

onto.terms.foaf.Person.uri, onto.terms.foaf.Person.description

('http://xmlns.com/foaf/0.1/Person', rdflib.term.Literal('A person.'))

Another term

onto.terms.foaf.familyName

foaf:familyName

Find domain and range of the term

onto.terms.foaf.familyName.domain, onto.terms.foaf.familyName.range

(['foaf:Person'], ['Literal'])

Build SPARQL queries automatically, and execute them on endpoints

df = onto.query(
    'https://dbpedia.org/sparql',
    onto.terms.foaf.Person,
    onto.terms.foaf.familyName,
    limit=10,
)
df
Person familyNamevalue
0 http://dbpedia.org/resource/Sami_Kelopuro Kelopuro
1 http://dbpedia.org/resource/Ben_Lamb_(poker_pl... Lamb
2 http://dbpedia.org/resource/Juha_Helppi Helppi
3 http://dbpedia.org/resource/Patrik_Antonius Antonius
4 http://dbpedia.org/resource/Peter_Jetten Jetten
5 http://dbpedia.org/resource/Viacheslav_Zhukov Zhukov
6 http://dbpedia.org/resource/Chris_Moorman Moorman
7 http://dbpedia.org/resource/Mitch_Schock Schock
8 http://dbpedia.org/resource/Tommy_Angelo Angelo
9 http://dbpedia.org/resource/Eric_Haber Haber

We can take a look at the SPARQL query that was executed:

q = onto.create_query(
    onto.terms.foaf.Person,
    onto.terms.foaf.familyName,
    limit=10,
)
print(q)

PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX foaf: <http://xmlns.com/foaf/0.1/>
SELECT DISTINCT ?Person ?familyNamevalue
WHERE {
    ?Person foaf:familyName ?familyNamevalue .
   { ?Person rdf:type foaf:Person . }
}
LIMIT 10

Other features include:

  • Automated SPARQL query of both local knowledge graphs and remote endpoints

  • Read and parse ontologies

  • Combine ontologies programatically and connect them

For more examples, please check [here](add link)

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