Constrains property for each population

        See :func:`vespa.stars.StarPopulation.constrain_property`;
        all arguments passed to that function for each population.

def constrain_property(self,prop,**kwargs):
        """
        Constrains property for each population

        See :func:`vespa.stars.StarPopulation.constrain_property`;
        all arguments passed to that function for each population.

        """
        if prop not in self.constraints:
            self.constraints.append(prop)
        for pop in self.poplist:
            try:
                pop.constrain_property(prop,**kwargs)
            except AttributeError:
                logging.info('%s model does not have property stars.%s (constraint not applied)' % (pop.model,prop))