def __init__ (self, options=[]):
        for opt in options:
            setattr(self, opt, None)
Returns the number of triples in the graph
dataset/ETHPy150Open azoft-dev-team/imagrium/env/Lib/distutils/fancy_getopt.py/OptionDummy.__init__--crossover with--dataset/ETHPy150Open RDFLib/rdflib/rdflib/graph.py/Graph.__len__