from PIL import Image
src = r"C:\Jarvis\rust\resources\icons\icon.png"
dst = r"C:\Jarvis\rust\resources\icons\icon.ico"

img = Image.open(src).convert("RGBA")
sizes = [(16, 16), (24, 24), (32, 32), (48, 48), (64, 64), (128, 128), (256, 256)]
img.save(dst, format="ICO", sizes=sizes)
print(f"wrote {dst} from {src} ({img.size})")