Update VGGFace2.py

VGGFace2.py

@@ -117,28 +117,24 @@ class VGGFace2(datasets.GeneratorBasedBuilder):
             target_dict
         )
 
-        mapped_paths = dl_manager.iter_archive(
-                dict(
-                    (
-                        placeholder_key,
-                        _URLS["default"][placeholder_key]
-                    )
-                    for placeholder_key in ("train", "test")
-                )
+        mapped_paths_train = dl_manager.iter_archive( 
+                        _URLS["default"]["train"]
+        )
+        mapped_paths_test = dl_manager.iter_archive( 
+                        _URLS["default"]["test"]
         )
-
         return [
             datasets.SplitGenerator(
                 name="train",
                 gen_kwargs={
-                    "paths": mapped_paths["train"],
+                    "paths": mapped_paths_train,
                     "meta_paths": metadata,
                 },
             ),
             datasets.SplitGenerator(
                 name="test",
                 gen_kwargs={
-                    "paths": mapped_paths["test"],
+                    "paths": mapped_paths_test,
                     "meta_paths": metadata,
                 },
             ),