Loading a public remote RDF file using `rdflib <http://www.rdflib.net/>`_ 
=========================================================================

Print all persons mentioned in Tim Berners-Lee's FOAF document:

.. testcode::
 
    import surf
    
    store = surf.Store(reader = "rdflib",
                       writer = "rdflib",
                       rdflib_store = "IOMemory")
    
    session = surf.Session(store)
    
    print "Load RDF data"
    store.load_triples(source = "http://www.w3.org/People/Berners-Lee/card.rdf")
    
    Person = session.get_class(surf.ns.FOAF["Person"])
    
    all_persons = Person.all()
    
    print "Found %d persons in Tim Berners-Lee's FOAF document" % (len(all_persons))
    for person in all_persons:
        print person.foaf_name.first
        
.. testoutput::
   :hide:
   :options: +ELLIPSIS

   ...