def __delitem__(self, item):
        var, cond = self._convertSlices(item)
        if 0 > len(var):
            raise IndexError('You can delete only whole mass function, eg. [:2, 1, 3]')
        self._delMassFunction(cond)
dataset/ETHPy150Open uci-cbcl/tree-hmm/gmtkParam/__init__.py/ProbTable.__delitem__/swapped operands of `>`