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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def paint_cube(self, x, y):
 """ Paints a cube at a certain position a color. Parameters x: int Horizontal position of the upper left corner of the cube. y: int Vertical position of the upper left corner of the cube. """

        # get the color
        color = self.next_color()
        # calculate the position
        cube_pos = [x, y, x + self.cube_size, y + self.cube_size]
        # draw the cube
        draw = ImageDraw.Draw(im=self.image)
        draw.rectangle(xy=cube_pos, fill=color)