minor refactoring for typing

Signed-off-by: Arthur Dujardin <[email protected]>

Author: arthurdjn

monai/data/utils.py

@@ -621,13 +621,12 @@ def decollate_batch(batch, detach: bool = True, pad=True, fill_value=None):
     """
     if batch is None:
         return batch
-    if isinstance(batch, (float, int, str, bytes)):
+    if isinstance(batch, (float, int, str, bytes)) or (
+        type(batch).__module__ == "numpy" and not isinstance(batch, Iterable)
+    ):
         return batch
-    if type(batch).__module__ == "numpy":
-        if not isinstance(batch, Iterable):
-            return batch
-        if batch.ndim == 0:
-            return batch.item() if detach else batch
+    if isinstance(batch, np.ndarray) and batch.ndim == 0:
+        return batch.item() if detach else batch
     if isinstance(batch, torch.Tensor):
         if detach:
             batch = batch.detach()