Cannot enumerate dataset graphs

[berezovskyi]

From https://github.com/RDFLib/rdflib/blob/master/rdflib/graph.py#L1573 I wrote the following code:

dataset = rdflib.Dataset(store="SPARQLStore")

dataset.open('http://fuseki.hostname/dataset-name/query')

for g in dataset.graphs():
    print(g)

This results in a TypeError('The SPARQL store is read only') on the internal method call to rdflib.plugins.stores.sparqlstore.SPARQLStore#add_graph.

[berezovskyi]

Versions:

• Python 3.6.2
• rdflib 4.2.2
• SPARQLWrapper 1.8.0