check dirs

scripts/evaluate_semantic_segmentation.py

@@ -59,6 +59,15 @@ def compute_final_per_scene(res: pd.DataFrame, scene: str, classes: list[str],
     f1_weighted = (df_metrics["f1"] * class_weights).sum()
     return scene, iou_weighted, f1_weighted
 
+def _check_and_symlink_dirs(y_dir: Path, gt_dir: Path) -> Path:
+    """checks whether the two provided paths are actual full of npz directories and links them together in a tmp dir"""
+    assert (l := [x.name for x in y_dir.iterdir()]) == (r := [x.name for x in gt_dir.iterdir()]), f"{l} \n vs \n {r}"
+    assert all(x.endswith(".npz") for x in [*l, *r]), f"Not dirs of only .npz files: {l} \n {r}"
+    (temp_dir := Path(TemporaryDirectory().name)).mkdir(exist_ok=False)
+    os.symlink(y_dir, temp_dir / "pred")
+    os.symlink(gt_dir, temp_dir / "gt")
+    return temp_dir
+
 def get_args() -> Namespace:
     parser = ArgumentParser()
     parser.add_argument("y_dir", type=lambda p: Path(p).absolute())
@@ -83,9 +92,7 @@ def get_args() -> Namespace:
 
 def main(args: Namespace):
     # setup to put both directories in the same parent directory for the reader to work.
-    (temp_dir := Path(TemporaryDirectory().name)).mkdir(exist_ok=False)
-    os.symlink(args.y_dir, temp_dir / "pred")
-    os.symlink(args.gt_dir, temp_dir / "gt")
+    temp_dir = _check_and_symlink_dirs(args.y_dir, args.gt_dir)
     sema_repr = partial(SemanticRepresentation, classes=args.classes, color_map=[[0, 0, 0]] * len(args.classes))
     reader = MultiTaskDataset(temp_dir, handle_missing_data="drop", task_types={"pred": sema_repr, "gt": sema_repr})
     assert (a := len(reader.all_files_per_repr["gt"])) == (b := len(reader.all_files_per_repr["pred"])), f"{a} vs {b}"