Python v3.9 (#189)

modules/model_loader.py

@@ -1,13 +1,13 @@
 import os
 from urllib.parse import urlparse
-
+from typing import Optional
 
 def load_file_from_url(
         url: str,
         *,
         model_dir: str,
         progress: bool = True,
-        file_name: str | None = None,
+        file_name: Optional[str] = None,
 ) -> str:
     """Download a file from `url` into `model_dir`, using the file present if possible.