def distinct(self, *field_names):
        return self
.. todo::
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.5/django/db/models/query.py/EmptyQuerySet.distinct--crossover with--dataset/ETHPy150Open lisa-lab/pylearn2/pylearn2/datasets/preprocessing.py/ZeroColumnInsertBlock.__call__