BUG: --result_folder Deletion

Description

The --result_folder deletes previous folder without warning.

if os.path.exists(opt.result_folder):
    shutil.rmtree(opt.result_folder)
os.makedirs(opt.result_folder)

So if you happen to want to save your results in the same folder as your checkpoint weights, you delete it instead. This is incredibly risky behavior.

Recommendation

Confirm deletion before doing so with:

if os.path.exists(opt.result_folder):
    print(f"About to delete: {opt.result_folder}")
    input("Press Enter to confirm...")
    shutil.rmtree(opt.result_folder)
os.makedirs(opt.result_folder)

OR, just don't delete the folder in the first place.

Search the project for opt.result_folder and inspect the surrounding command-line setup and folder handling. Reproduce the existing deletion behavior, then verify that an existing result folder is no longer removed without the intended safe handling and that new result folders still work.