convert_vfb_ufo.py

from pathlib import Path
from defcon import Font
from os import utime

path = Path(__file__).parent
for ufo_path in path.rglob('*.ufo'):
    vfb_path = ufo_path.with_suffix(".vfb")
    print(vfb_path)
    if vfb_path.exists:
        f = Font(ufo_path)
        if not (ufo_path / "layercontents.plist").exists:
            print("Converting to UFO 3")
            f.save(formatVersion=3)
        try:
            stat = vfb_path.stat()
            utime(ufo_path, (stat.st_mtime, stat.st_mtime))
        except FileNotFoundError:
            pass