From 23b369f1c09e0ecb689d8be80833b626258ffb6d Mon Sep 17 00:00:00 2001
From: "Timothy P. Ellsworth Bowers" <tbowers@lowell.edu>
Date: Wed, 1 Nov 2023 10:19:32 -0700
Subject: [PATCH] Format of cached files

	modified:   pypeit/data/utils.py
---
 pypeit/data/utils.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pypeit/data/utils.py b/pypeit/data/utils.py
index 41c32c7c53..cba62b0153 100644
--- a/pypeit/data/utils.py
+++ b/pypeit/data/utils.py
@@ -247,7 +247,7 @@ def get_reid_arxiv_filepath(arxiv_file: str) -> tuple[pathlib.Path, str]:
         reid_path = fetch_remote_file(arxiv_file, "arc_lines/reid_arxiv")
 
     # Return the path to the `reid_arxiv` file, and the file format
-    return reid_path, reid_path.suffix.replace('.','').lower()
+    return reid_path, arxiv_file.split('.')[-1].lower()
 
 
 def get_skisim_filepath(skisim_file: str) -> pathlib.Path: