Dictionary of interventions in /scenario/interventions/vectorPop section

def interventions(self):
        """ Dictionary of interventions in /scenario/interventions/vectorPop section """
        interventions = {}
        if self.et is None:
            return interventions
        for intervention in self.et.findall("intervention"):
            interventions[intervention.attrib['name']] = VectorPopIntervention(intervention)
        return interventions