im = Image.open(image_path)
draw = ImageDraw.Draw(im)
top_left = 50, 50
bottom_right = 100, 100
outline_width = 10
outline_color = 'black'
draw_rectangle(draw, (top_left, bottom_right), color=outline_color, width=
    outline_width)
Is there a way to specify the width of a rectangle in PIL?