from pathlib import Path

label_dir = Path("./datasets/your_dataset/val/labels")

def valid_line(line):
    parts = line.split()
    if len(parts) != 5:
        return False
    cls, x, y, w, h = map(float, parts)
    return 0 <= cls and 0 < w <= 1 and 0 < h <= 1


empty = []
for p in label_dir.glob("*.txt"):
    if p.stat().st_size == 0:
        empty.append(p.name)

print(f"Empty label files: {len(empty)}")

invalid = []
for p in label_dir.glob("*.txt"):
    lines = p.read_text().strip().splitlines()
    if not any(valid_line(l) for l in lines):
        invalid.append(p.name)

print(f"Effectively empty labels: {len(invalid)}")