def lstdev (inlist):
    return math.sqrt(var(inlist))
TODO: this fails right now because namedtuples' __new__ is
dataset/ETHPy150Open radlab/sparrow/src/main/python/third_party/stats.py/lstdev--crossover with--dataset/ETHPy150Open mahmoud/boltons/tests/test_iterutils.py/TestRemap.test_namedtuple