def __init__(self, model=None, query=None, using=None):
        super(MapnikQuerySet, self).__init__(model=model, query=query, using=using)
        try:
            self.query = query or GeoQuery(self.model)
        except __HOLE__: # pre django 1.2
            self.query = query or GeoQuery(self.model,connection)
dataset/ETHPy150Open springmeyer/djmapnik/djmapnik/managers.py/MapnikQuerySet.__init__