def variation(a, axis=0):
    a, axis = _chk_asarray(a, axis)
    return a.std(axis)/a.mean(axis)
Make CassandraClusterPool act like its own CassandraClient when
dataset/ETHPy150Open scipy/scipy/scipy/stats/mstats_basic.py/variation--crossover with--dataset/ETHPy150Open driftx/Telephus/telephus/pool.py/CassandraClusterPool.__getattr__