Update download.py

download.py

@@ -157,28 +157,20 @@ def load_arrow_table(data_source_dir: str, revision: str = "main") -> Dataset:
     """
     api = HfApi()
 
-    # Parquet configs may live under a __-joined path or the original /-joined path.
-    candidates = [data_source_dir]
-    flat = data_source_dir.replace("/", "__")
-    if flat != data_source_dir:
-        candidates.append(flat)
-
-    parquet_paths: list[str] = []
-    for candidate in candidates:
-        repo_items = api.list_repo_tree(
-            repo_id=HF_REPO_ID,
-            repo_type=HF_REPO_TYPE,
-            path_in_repo=candidate,
-            revision=revision,
-        )
-        parquet_paths = sorted(
-            item.path
-            for item in repo_items
-            if getattr(item, "path", "").endswith(".parquet")
-            and "pkgs" in os.path.basename(item.path)
-        )
-        if parquet_paths:
-            break
+    # Parquet configs live under a __-joined path.
+    parquet_dir = data_source_dir.replace("/", "__")
+    repo_items = api.list_repo_tree(
+        repo_id=HF_REPO_ID,
+        repo_type=HF_REPO_TYPE,
+        path_in_repo=parquet_dir,
+        revision=revision,
+    )
+    parquet_paths = sorted(
+        item.path
+        for item in repo_items
+        if getattr(item, "path", "").endswith(".parquet")
+        and "pkgs" in os.path.basename(item.path)
+    )
 
     if not parquet_paths:
         raise FileNotFoundError(