nquad parsing seems to return empty graph.

[a.sch...@gmail.com]

Assume the first exampe nquad example from https://dvcs.w3.org/hg/rdf/raw-file/default/nquads/index.html :
<http://one.example/subject1> <http://one.example/predicate1> <http://one.example/object1> <http://example.org/graph3>.
_:subject1 <http://an.example/predicate1> "object1" <http://example.org/graph1> .
_:subject2 <http://an.example/predicate2> "object2" <http://example.org/graph5> .

When using the following code using the file 'quads':

graph = rdf.Graph()
graph = graph.parse(quads, format='nquads')
print("graph has %s statements." % len(graph))
print(list(graph))

The output is:
graph has 0 statements.
[]

What am I missing? I'd be very glad for every assistance!

[Jon Crump]

If quads, you need ConjunctiveGraph(), not Graph()

>>> quads = """<http://one.example/subject1> <http://one.example/predicate1> <http://one.example/object1> <http://example.org/graph3>.\n_:subject1 <http://an.example/predicate1> "object1" <http://example.org/graph1> .\n_:subject2 <http://an.example/predicate2> "object2" <http://example.org/graph5> ."""

>>> graph = ConjunctiveGraph()

>>> graph.parse(data=quads, format="nquads")

<Graph identifier=N0a5bf4cb2fa247949e284b5e6ecdfc75 (<class 'rdflib.graph.Graph'>)>

>>> len(graph)

3

>>> print graph.serialize(format="trig")

@prefix ns1: <http://one.example/> .

@prefix ns2: <http://an.example/> .

@prefix ns3: <http://example.org/> .

@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .

@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .

@prefix xml: <http://www.w3.org/XML/1998/namespace> .

@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

ns3:graph1 {

    [] ns2:predicate1 "object1" .

}

ns3:graph3 {

    ns1:subject1 ns1:predicate1 ns1:object1 .

}

ns3:graph5 {

    [] ns2:predicate2 "object2" .

}

–– Si vis pacem, bellum adflicta. ––

--
http://github.com/RDFLib
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