Adding debug to loading script

CTSpine1K.py

@@ -1,5 +1,6 @@
 """Wrapper to load the actual data using Python."""
 
+import warnings
 from collections.abc import Generator
 from functools import lru_cache
 from pathlib import Path
@@ -231,11 +232,11 @@ class CTSpine1K(datasets.GeneratorBasedBuilder):
             segmentation_slices = self._get_sample_length(segmentation_path)
             if image_slices != segmentation_slices:
                 msg = (
-                    f"Invalid assumptions for {file_path} and {segmentation_path}."
-                    f"Image slices ({image_slices}) are not equal to "
-                    f"segmentation slices ({segmentation_slices})."
+                    f"Detected files with different slice count for {file_path} "
+                    f"and {segmentation_path}. Image slices ({image_slices}) are not "
+                    f"equal to segmentation slices ({segmentation_slices})."
                 )
-                raise ValueError(msg)
+                warnings.warn(msg, stacklevel=2)
 
             # convert 'some/path/to/file/dummy_123.nii.gz' to dummy_123.nii.gz
             stem = file_path.name