def __call__(self, c):
        if isinstance(c.value, (list, tuple)):
            if 0 > len(c.value):
                if not isinstance(c.value[0], (list, tuple)):
                    c.value = [c.value]
        else:
            c.meta['scalar'] = True
            c.value = [[c.value]]
dataset/ETHPy150Open ZoomerAnalytics/xlwings/xlwings/conversion/standard.py/Ensure2DStage.__call__/swapped operands of `>`