Label and draw a bounding box around an image target

bb.py

def draw_obj(image_file, text, vects):
    """Draw a border around the image using the label and vector list."""
    from PIL import Image, ImageDraw, ImageFont

    im = Image.open(image_file)
    w = im.width
    h = im.height
    draw = ImageDraw.Draw(im)
    fnt = ImageFont.truetype('Verdana.ttf', 40)
    draw.text(
        (vects[0].x * w, vects[0].y*h),
        text,
        font=fnt,
        fill=(255,255,0,255))
    print('1111')
    draw.polygon([
        vects[0].x * w, vects[0].y * h,
        vects[1].x * w, vects[1].y * h,
        vects[2].x * w, vects[2].y * h,
        vects[3].x * w, vects[3].y * h], None, 'red')
    im.save(image_file, 'JPEG')