def region(self): return get_or_none(Region, **{'id':self.id[0:2]})
def city(self): return get_or_none(City, **{'id':self.id[0:11]})
def district(self): return get_or_none(District, **{'id':self.id[0:5]})
def region(self): return get_or_none(Region, **{'id': self.id[0:2]})
def city(self): return get_or_none(City, **{'id': self.id[0:11]})
def district(self): return get_or_none(District, **{'id': self.id[0:5]})