Constant was accidentally removed during deprecation transition (#913)

Co-authored-by: Lyle Nel <[email protected]>

Author: 2 people

src/huggingface_hub/snapshot_download.py

@@ -12,3 +12,4 @@
 )
 
 from ._snapshot_download import *  # noqa
+from .constants import REPO_ID_SEPARATOR  # noqa

tests/test_snapshot_download.py

@@ -358,3 +358,7 @@ def test_snapshot_download_import():
         from huggingface_hub.snapshot_download import snapshot_download as x  # noqa
 
     assert x is snapshot_download
+
+
+def test_snapshot_download_import_constant_not_raise():
+    from huggingface_hub.snapshot_download import REPO_ID_SEPARATOR  # noqa