def __contains__(self, triple):
        for triple in self.triples(triple):
            return True
        return False
The actual logic of the command. Subclasses must implement
dataset/ETHPy150Open RDFLib/rdflib/rdflib/graph.py/Graph.__contains__--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.4/django/core/management/base.py/BaseCommand.handle