def names(cls):
    return cls.__by_name.iterkeys()
Return the indices for the lower-triangle of an (n, n) array.
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/protorpc/protorpc/messages.py/_EnumClass.names--crossover with--dataset/ETHPy150Open nipy/nitime/nitime/index_utils.py/tril_indices