def opt_group(self, name):
        self['groups'].append(name.decode(sys.stdin.encoding))
Store the union of the current set and one or more
dataset/ETHPy150Open nlloyd/SubliminalCollaborator/libs/twisted/words/tap.py/Options.opt_group--crossover with--dataset/ETHPy150Open coleifer/walrus/walrus/containers.py/ZSet.unionstore