another py3 test fix
another py3 test fix

ssssam/rdflib,yingerj/rdflib,dbs/rdflib,avorio/rdflib,RDFLib/rdflib,yingerj/rdflib,ssssam/rdflib,armandobs14/rdflib,armandobs14/rdflib,dbs/rdflib,ssssam/rdflib,RDFLib/rdflib,armandobs14/rdflib,avorio/rdflib,marma/rdflib,ssssam/rdflib,marma/rdflib,RDFLib/rdflib,RDFLib/rdflib,yingerj/rdflib,marma/rdflib,marma/rdflib,dbs/rdflib,yingerj/rdflib,avorio/rdflib,dbs/rdflib,armandobs14/rdflib,avorio/rdflib