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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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rdflib-jsonld removes a / from URLs while parsing graph

This is my code to populate and parse an rdflib graph: context = { "@context": { "isGiven": URIRef('<'+'https://w3id.org/ontology#isGiven'+rdfLizerItem['ProductByCategory']+'>'), "givenAs":…
kurious
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SPARQL Query returns nothing from a specific RDF graph

After creating an RDF graph using RDFLib in python to apply a sensor ontology ( I used for that a sensor ontology, used also namespace and Bnode which is a blank node representing a resource for which a URI or literal is not given). I tried to query…
raeX
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rdflib-jsonld generates spurious url when '<' is used in '@id'

I'm using rdflib-jsonld to parse some NoSQL data and insert into Sesame. This is the problematic portion of the code: context = { "@context": { "isGiven": URIRef('<'+'http://purl.org/net/something#isGiven'+rdfLizerItem['FooByBar']+'>'), …
kurious
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Python RDFLib get object value by subject and predicate

I have a rdf file that looks like this: a little …
cirnelle
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How to INSERT all triples from an RDFlib graph into another repository without iterating through every triple?

This question is related to What URI to use for a Sesame repository while executing a SPARQL ADD query. I'm trying to INSERT all triples from a Sesame repository into another (Dydra). There are a couple of ways to do it, such as using SERVICE clause…
kurious
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How to iterate over CONSTRUCT output from rdflib?

This is a follow-up question from How to prevent triples from getting mixed up while uploading to Dydra programmatically? I've created a new graph using SPARQL CONSTRUCT query. I now want to iterate over it so that I can add the statements to an…
kurious
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How to prevent triples from getting mixed up while uploading to Dydra programmatically?

I am trying to upload some data to Dydra from a Sesame triplestore I have on my computer. While the download from Sesame works fine, the triples get mixed up (the s-p-o relationships change as the object of one becomes object of another). Can…
kurious
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RDFLib (Python) to Sesame (JAVA)

I have the following code in python using RDFLib and I want to translate it into JAVA using Sesame libraries. Python restrictionNode= BNode() g.add((nodeIndividualName,rdftype,restrictionNode)) g.add((restrictionNode, rdftype,…
msc87
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Unable to log into Dydra using Python

I'm a registered user with Dydra and trying to update a repository programmatically in it. Even though I have logged in, I get a 401 error when trying to update a repository. Following is my code: username = 'myUsername' password =…
kurious
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rdflib in Python - xsd:double value without scientific notation

I am looking for hints how to format values in a Turtle RDF graph, rdflib for Python. Currently I get values of datatype double displayed in scientific notation: -4.28322e-01 ; 5.175547e+01 ; and what I need to achieve is "-0.428322"^^xsd:double…
City Remade
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XML Sparql results from rdflib

I am using Graph() in RDFLib, i am correctly getting results of from the graph using sparql. Is it possible to get the results directly in HTML table format?
Noor
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How do I add image url with graph add in rdflib

I am using rdflib==4.1.2. This is my code >>> g=rdflib.Graph() >>> s=rdflib.BNode() >>> FOAF = rdflib.Namespace("http://xmlns.com/foaf/0.1/") >>> g.bind('foaf', FOAF) >>> g.add((s,…
trishnag
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rdflib using sqlalchemy plugin causes ImportError

When trying to execute the demo given on https://github.com/RDFLib/rdflib-sqlalchemy I receive an error File "store = plugin.get("SQLAlchemy", Store)(identifier=self.ident) File "/usr/local/lib/python3.5/site-packages/rdflib/plugin.py", line 104,…
trevore
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how to parse json-ld file with rdflib.parse() or load()

I am new to json-ld and rdflib usage. I have json-ld file with @context and @graph sections inside. I want to use rdflib open to load this graph. When I try using parse() method, with format='n3', I am getting error BadSyntax: at line 5 of <>: Bad…
chetan pawar
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Can compacting arrays be more selective in JSON-LD framing?

In the question JSON-LD framing single object arrays was asked on how to make arrays from single objects while framing JSON-LD for all arrays (by adding an compactArrays option). Is there any way to do it selectively? Starting from always having…
Roman Susi
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