def __delitem__(self, key):

        dict.__delitem__(self, key)
        self.changed()
cluster: a combination of :meth:`~rdfextras.sparql.query.Query.clusterBackward`
dataset/ETHPy150Open mathcamp/pypicloud/pypicloud/cache/sql.py/MutableDict.__delitem__--crossover with--dataset/ETHPy150Open RDFLib/rdfextras/rdfextras/sparql/query.py/Query.cluster