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Questions tagged [rdflib]

RDFLib is a Python library for working with RDF. It supports parsers and serializers for different syntaxes (RDF/XML, N3, N-Triples, Turtle, TriX and RDFa) as well of remote and local SPARQL queries. Please do not use this tag for rdflib.js.

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Please do not confuse the RDFLib Python library with the rdflib.js Javascript library.

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Fetching triples using SPARQL query from turtle file

I am new to SPARQL and currently struglling to fetch triples from a turtle file. ### https://ontology/1001 rdf:type owl:Class ; rdfs:subClassOf ; …
rshar
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python rdflib doesn't export @context and @graph when serializing with json-ld

I have created a Graph() in rdflib 6.2.0 and attempting to export it as JSON-LD. My expectation was that I would end up with a @context containing all the namespace prefixes and a @graph containing all the elements. I'm just simply…
O-U-O
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Adding blank nodes in triples

The code written below gives the following output: Code: person =…
Muhammad Imran
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Creating Owlready2 properties dynamically

I am in need of creating an ontology dynamically. for classes I am creating them using below method. with onto: NewClass = types.new_class(class_name, tuple(SuperClasses)) But for creating properties(object/data etc..) I am unable to find a way…
Zenmate
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How to pass in a list of values for SPARQL query using rdflib?

With rdflib's Graph.query, is there a way to pass in a list of values to use in a SPARQL query? I'm aware of the initBindings argument for binding single values to variables, but I'm looking to pass in the equivalent of a VALUES block. Conceptually,…
King Chung Huang
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How to create a knowledge graph from a pandas dataframe using RDFLIB library in Python

I have a df from which I need to create a Knowledge Graph using RDFlib library in Python. So that I can visualize the created knowledge graph in various visualization tools like Protege, Webowl etc. How can this be done?
Arya Stark
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Retrieve objects from RDF triples

With the following snippet from the pizza ontology: …
gedman
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How can I get the list of movies by a director from dbpedia using sparql query

I have been facing a great deal of difficulty trying to write a python code that will return the list of movies by the director called Francis Ford Coppola. Below is a good that I have so far your assistance will be greatly appreciated. I have also…
Fornow
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How to get XML Attributes via rdflib

I have an rdf file with the following content:
Lukas Schmid
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Transitive inference with OWL-RL on RDFLIB

I am trying to use an OWL reasoner on an RDF graph which I have created using rdflib as follows: ex = Namespace('http://example.org#') g = Graph() g.bind("ex", ex) g.add((ex.Bob, ex.drives, ex.Car)) g.add((ex.Car, RDF.type,…
Joel Oduro-Afriyie
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owlready2 rdfs:subClassOf inference doesn't work

I created an rdflib graph and serialised it into an owl file formatted as XML. I explicitly write A RDF.type RDFS.Class and B RDFS.subClassOf A. After I do this. onto =…
lamename
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How to use SPARQL command INSERT with rdflib? (not INSERT DATA)

Using python's rdflib, I am trying to insert new triples into a graph based on some basic manipulations with existing triples. For instance, in this basic example, I create a graph that I populate using INSERT DATA with 4 triples. I then try to…
web_investigator
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Find all triples in a given RDFLib namespace

I would like to retrieve property/object pairs of a given subject, but only for these properties matching a specific namespace (let us say rdflib.RDFS.) Something like g.predicate_objects(s, prop_prefix=RDFS). Is there a built-in way to achieve…
Florent Georges
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How to use rdflib to query WikiData?

I mean that I want to use rdflib to query WIkidata in my local computer, but rdflib.Graph() need to parse the namespace firstly.THerefore, How can I get the Wikidata NameSpace to use the rdflib local code?
zqhead
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Does RDFlib available for micropython?

If RDFlib is not available for Micropython, is there any other library available for Micropython to work with RDF?
Madhubhani
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