How to use the svgutils.transform.LineElement function in svgutils

def _gen_grid(self, dx, dy, width=0.5):
        xmax, ymax = 1000, 1000
        x, y = 0, 0
        lines = []
        txt = []
        while x < xmax:
            lines.append(_transform.LineElement([(x, 0), (x, ymax)],
                                                width=width))
            txt.append(_transform.TextElement(x, dy/2, str(x), size=self.size))
            x += dx
        while y < ymax:
            lines.append(_transform.LineElement([(0, y), (xmax, y)],
                                                width=width))
            txt.append(_transform.TextElement(0, y, str(y), size=self.size))
            y += dy
        return lines+txt

def _gen_grid(self, dx, dy, width=0.5):
        xmax, ymax = 1000, 1000
        x, y = 0, 0
        lines = []
        txt = []
        while x < xmax:
            lines.append(_transform.LineElement([(x, 0), (x, ymax)],
                                                width=width))
            txt.append(_transform.TextElement(x, dy/2, str(x), size=self.size))
            x += dx
        while y < ymax:
            lines.append(_transform.LineElement([(0, y), (xmax, y)],
                                                width=width))
            txt.append(_transform.TextElement(0, y, str(y), size=self.size))
            y += dy
        return lines+txt

def __init__(self, points, width=1, color='black'):
        element = _transform.LineElement(points, width=width, color=color)
        Element.__init__(self, element.root)