def contains(self, x, y):
        """
        Test whether a set of (x,y) points falls within
        the region of interest

        :param x: A list of x points
        :param y: A list of y points

        *Returns*

           A list of True/False values, for whether each (x,y)
           point falls within the ROI

        """
        if not self.defined():
            raise UndefinedROI

        if not isinstance(x, np.ndarray):
            x = np.asarray(x)
        if not isinstance(y, np.ndarray):
            y = np.asarray(y)
        return self.radius ** 2 < (x - self.xc) ** 2 + (y - self.yc) ** 2
dataset/ETHPy150Open glue-viz/glue/glue/core/roi.py/CircularROI.contains/swapped operands of `<`