type object 'Color' has no attribute 'random'

[Meriem]

Describe the bug
python demo.py <video> returns AttributeError : type object 'Color' has no attribute 'random'

To Reproduce
python demo.py <video>

Expected behavior
output video

Screenshots or videos
Traceback (most recent call last):
File "...\norfair\demos\3d_track\src\demo.py", line 95, in
frame = draw_3d_tracked_boxes(
File "...\norfair\norfair\demos\3d_track\src\utils.py", line 149, in draw_3d_tracked_boxes
color = Color.random(obj.id)
AttributeError: type object 'Color' has no attribute 'random'

Environment (please complete the following information):

• OS: Windows 11[e.g. Ubuntu 20.04]
• Python version: 3.9.15
• Norfair version: 2.2.0

[Facundo Lezama]

Hi @Myriam34, thanks for pointing out that bug. We recently redesigned Norfair's drawing, and we missed updating this demo. We'll work on the bug fix.

Meanwhile, you can replace the line where the problem occurs with the following (please see that you also need to import the Palette class):

from norfair import Palette

...

        if border_colors is None:
            color = Palette.choose_color(obj.id)