def range_by_lex(self, low, high, start=None, num=None, reverse=False):
        if reverse:
            fn = self.database.zrevrangebylex
            low, high = high, low
        else:
            fn = self.database.zrangebylex
        return fn(self.key, low, high, start, num)
Test for the ValueError in SimpleMovingAverage.execute().
dataset/ETHPy150Open coleifer/walrus/walrus/containers.py/ZSet.range_by_lex--crossover with--dataset/ETHPy150Open T-002/pycast/pycast/tests/methodtest.py/SimpleMovingAverageTest.execute_value_error_test