Update app.py

app.py

@@ -115,7 +115,7 @@ _ROBO_URL_RX = re.compile(r"""
    |
     (?P<ws2>[A-Za-z0-9\-_]+)/(?P<proj2>[A-Za-z0-9\-_]+)(?:/(?:v)?(?P<ver2>\d+))?
  )$
-""", re.VERBOSE | re.IGNORECASE)
+""", re.IGNORECASE | re.VERBOSE)
 
 def parse_roboflow_url(s: str):
     s = s.strip()
@@ -229,7 +229,6 @@ def yolo_to_coco(split_dir_images, split_dir_labels, class_names, out_json):
                     y = max(0.0, (cy - bh / 2.0) * h)
                     ww = max(1.0, bw * w)
                     hh = max(1.0, bh * h)
-                    # clamp right/bottom to image bounds
                     if x + ww > w:
                         ww = max(1.0, w - x)
                     if y + hh > h:
@@ -442,14 +441,24 @@ def _set_first_existing_key_deep(cfg: dict, keys: list, value):
 
 def _install_supervisely_logger_shim():
     """
-    Creates a minimal shim so `from supervisely.nn.training import train_logger` works.
+    Create a *package* shim that shadows site-packages:
+      supervisely/nn/training/__init__.py  -> exposes train_logger
+    Ensures 'from supervisely.nn.training import train_logger' works even if the
+    installed 'supervisely' no longer provides it.
     """
-    base = pathlib.Path(tempfile.gettempdir()) / "sly_shim" / "supervisely" / "nn"
-    base.mkdir(parents=True, exist_ok=True)
-    for p in [base.parent.parent, base.parent, base]:
-        (p / "__init__.py").write_text("")
-    (base / "training.py").write_text(textwrap.dedent("""
-        # minimal shim for backward-compat with older Supervisely examples
+    root = pathlib.Path(tempfile.gettempdir()) / "sly_shim_pkg"
+    pkg_training = root / "supervisely" / "nn" / "training"
+    pkg_training.mkdir(parents=True, exist_ok=True)
+
+    # Make each level a package
+    for p in [root / "supervisely", root / "supervisely" / "nn", pkg_training]:
+        init_file = p / "__init__.py"
+        if not init_file.exists():
+            init_file.write_text("")
+
+    # Our shim __init__.py provides train_logger
+    (pkg_training / "__init__.py").write_text(textwrap.dedent("""
+        # Minimal shim for backward-compat with older RT-DETRv2 training code.
         class _TrainLogger:
             def __init__(self): pass
             def reset(self): pass
@@ -458,7 +467,8 @@ def _install_supervisely_logger_shim():
             def log_image(self, *a, **k): pass
         train_logger = _TrainLogger()
     """))
-    return str(base.parent.parent.parent)  # .../sly_shim
+    # Return path to prepend to PYTHONPATH
+    return str(root)
 
 def _ensure_checkpoint(model_key: str, out_dir: str) -> str | None:
     """