def __init__(self,
                 stack,
                 **kwa):
        super(Exchangent, self).__init__(stack=stack, **kwa)
Expect to 404 if set not found.
dataset/ETHPy150Open ioflo/ioflo/ioflo/aio/proto/exchanging.py/Exchangent.__init__--crossover with--dataset/ETHPy150Open heiskr/sagefy/server/test/test_routes_user_sets.py/test_add_set_404