Wand path_line() function in Python

from wand.image import Image
from wand.drawing import Drawing
from wand.color import Color

with Drawing() as draw:
    draw.stroke_width = 2
    draw.stroke_color = Color('black')
    draw.fill_color = Color('white')
    draw.path_start()

    # Start middle-left
    draw.path_move(to =(10, 100))

    # Continue path to right
    draw.path_line(to =(100, 0),
                    relative = True)

    # Continue path to bottom left
    draw.path_line(to =(10, 80),
                    relative = True)
    draw.path_finish()
    with Image(width = 200, height = 200, background = Color('lightgreen')) as image:
        draw(image)
        image.save(filename ="pathline.png")