from pathlib import Path
import shutil

source = Path(__file__).resolve().parent
for project in (Path(r'C:\wechat_rpa'), Path(r'C:\kefu\wechat_rpa')):
    backup = project / 'backups' / 'single-instance-tray-20260917'
    backup.mkdir(parents=True, exist_ok=True)
    for name in ('desktop_instance.py', 'test_desktop_instance.py'):
        target = project / name
        if target.exists() and not (backup / name).exists():
            shutil.copy2(target, backup / name)
        shutil.copy2(source / name, target)
        print(target)