Update markushgrapher-datasets.py

markushgrapher-datasets.py

@@ -87,7 +87,13 @@ class MarkushGrapherDataset(GeneratorBasedBuilder):
         return splits
 
     def _generate_examples(self, data_dir):
-        arrow_files = [os.path.join(data_dir, f) for f in os.listdir(data_dir) if f.endswith(".arrow")]
+        arrow_files = []
+        for root, _, files in os.walk(data_dir):
+            for f in files:
+                if f.endswith(".arrow"):
+                    arrow_files.append(os.path.join(root, f))
+        arrow_files = [f for f in arrow_files if self.config.name in f]
+        
         for file in arrow_files:
             dataset = Dataset.from_file(file)
             for i, row in enumerate(dataset):