reformat split list

rock-glacier-dataset.py

@@ -107,9 +107,7 @@ class RockGlacierDataset(datasets.GeneratorBasedBuilder):
 
    def _split_generators(self, dl_manager):
        data_files = dl_manager.download_and_extract(_URLS)
-       
-       if self.config.name == "image-classification":
-          return [
+       splits = [
 	          datasets.SplitGenerator(
 	          name=datasets.Split.TRAIN,
 	          gen_kwargs={
@@ -132,6 +130,9 @@ class RockGlacierDataset(datasets.GeneratorBasedBuilder):
 	          },
  	         ),
            ]
+       
+       if self.config.name == "image-classification":
+          return splits 
            
        if self.config.name == "image-segmentation":
           train_data = dl_manager.iter_files([data_files["train"]]), dl_manager.iter_files([data_files["train_mask"]])