I'm trying to run SPARQL queries on turtle files using python, but my sparql returns all the entries, how can I return the entry with name="Idham Al-Taif Mahmoud"? turtle file: python code: Answer I think your issue is with the methods. Here is a link with a nice example of what you want to do. The following script works for

Running SPARQL Queries on turtle file

I’m trying to run SPARQL queries on turtle files using python, but my sparql returns all the entries, how can I return the entry with name=”Idham Al-Taif Mahmoud”?

turtle file:

<http://example.org/person/a6376-dh3642> <http://dbpedia.org/ontology/hasName> "Idham Al-Taif Mahmoud".
<http://example.org/person/a6376-dh3642> <http://dbpedia.org/ontology/diedOn> "28 Feb 2017".
<http://example.org/person/a6376-dh3642> <http://dbpedia.org/ontology/hasAge> "adult".
<http://example.org/person/a6376-dh3642> <http://dbpedia.org/ontology/hasSex> "male".
<http://example.org/person/a6376-dh3642> <http://dbpedia.org/ontology/diedIn> "Samarra, south of Salah Al-Din".
<http://example.org/person/a6363-fn3690> <http://dbpedia.org/ontology/hasName> "Shukran Ghanim Hussein".
<http://example.org/person/a6363-fn3690> <http://dbpedia.org/ontology/diedOn> "26 Feb 2017".
<http://example.org/person/a6363-fn3690> <http://dbpedia.org/ontology/hasAge> "child".
<http://example.org/person/a6363-fn3690> <http://dbpedia.org/ontology/hasSex> "male".
<http://example.org/person/a6363-fn3690> <http://dbpedia.org/ontology/diedIn> "Hay Koor, west Mosul".
<http://example.org/person/a6348-sz3469> <http://dbpedia.org/ontology/hasName> "Munther Al-Ajaj ".
<http://example.org/person/a6348-sz3469> <http://dbpedia.org/ontology/hasMaritalStatus> "married".
<http://example.org/person/a6348-sz3469> <http://dbpedia.org/ontology/hasParentalStatus> "parent".
<http://example.org/person/a6348-sz3469> <http://dbpedia.org/ontology/diedOn> "25 Feb 2017".
<http://example.org/person/a6348-sz3469> <http://dbpedia.org/ontology/hasAge> "adult".
<http://example.org/person/a6348-sz3469> <http://dbpedia.org/ontology/hasSex> "male".
<http://example.org/person/a6348-sz3469> <http://dbpedia.org/ontology/diedIn> "Al-Mazra'a village, Baiji, north of Salah Al-Din".
<http://example.org/person/a6381-xz3480> <http://dbpedia.org/ontology/hasName> "Shifa Gerdi/Born Shifa Zikri Ibrahim Gerdi".
<http://example.org/person/a6381-xz3480> <http://dbpedia.org/ontology/diedOn> "25 Feb 2017".
<http://example.org/person/a6381-xz3480> <http://dbpedia.org/ontology/hasAge> "young adult".
<http://example.org/person/a6381-xz3480> <http://dbpedia.org/ontology/hasSex> "female".
<http://example.org/person/a6381-xz3480> <http://dbpedia.org/ontology/diedIn> "west Mosul".

python code:

import rdflib

filename = "turtle.ttl"


g = rdflib.Graph()

result = g.parse(filename, format='ttl')
print(result)

query = """

SELECT ?person
WHERE {
    ?person <http://dbpedia.org/ontology/hasName> "Idham Al-Taif Mahmoud"
}

"""

g.query(query)
for stmt in g:
    print(stmt)

Answer

I think your issue is with the methods. Here is a link with a nice example of what you want to do.

The following script works for me:

import rdflib
  
filename = "turtle.ttl"


g = rdflib.Graph()

g.parse(filename, format='ttl')

query = """

SELECT ?person
WHERE {
    ?person <http://dbpedia.org/ontology/hasName> "Idham Al-Taif Mahmoud"
}

"""

qres = g.query(query)

for row in qres :
        print("%s" % row)

Notice that I assign the results of the query to a new variable qres, and also that the parse method is void, i.e. it does not return a value like you had.

The % signs in the end are just to print a human readable result, but you can totally get rid of them.

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Answer