def unique(self, columns, name=None):
        return self._index_command('unique', columns, name)
toBytes(u"URL") --> 'URL'.
dataset/ETHPy150Open sdispater/orator/orator/schema/blueprint.py/Blueprint.unique--crossover with--dataset/ETHPy150Open kleientertainment/ds_mod_tools/pkg/win32/Python27/Lib/urllib.py/toBytes