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Sergio Fernández wrote:
>> Look at the attached program (...)
>
> If you attach the file perhaps we could help you... ;-)
>
That's not such a bad point :)
I do this a lot. I wish thunderbird would not let me send a message
without attachment if I mention the word "attach*"
Thanks for the heads up,
- - Gunnar
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import StringIO
import rdflib
from rdflib.Graph import Graph
g=Graph()
g.parse(StringIO.StringIO("""
@prefix ex: <http://example.org/>.
ex:x ex:p1 ex:a ;
ex:p2 ex:b ;
ex:p3 ex:c ;
ex:p4 ex:d .
"""), format='n3')
q="""
PREFIX ex: <http://example.org/>
SELECT ?a ?b ?c ?d WHERE { ex:x ex:p1 ?a
OPTIONAL { ?x ex:p2 ?b. }.
OPTIONAL { ?x ex:p3 ?c. }.
OPTIONAL { ?x ex:p4 ?d. }. }
"""
for l in g.query(q):
print l
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