def __init__(self, index=0):
        self.index = index
Use this decorator to disable test on specified backend.
dataset/ETHPy150Open uwescience/raco/raco/expression/aggregate.py/LocalAggregateOutput.__init__--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.5/django/contrib/gis/tests/utils.py/no_backend