From 24cc17ab300d9a5378e6de25b6f4dca46d657fd8 Mon Sep 17 00:00:00 2001
From: Zhuoqing Fang <fangzq@DN52eh1l.SUNet>
Date: Thu, 13 Feb 2025 14:09:46 -0800
Subject: [PATCH] fix error, #303

---
 gseapy/base.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gseapy/base.py b/gseapy/base.py
index b39a854..2721c57 100644
--- a/gseapy/base.py
+++ b/gseapy/base.py
@@ -431,9 +431,9 @@ def load_gmt(
         """load gene set dict"""
 
         genesets_dict = self.load_gmt_only(gmt)
+        subsets = list(genesets_dict.keys())
         if not subsets:  # Check if empty
             raise ValueError("Empty gene sets dictionary")
-        subsets = list(genesets_dict.keys())
         entry1st = genesets_dict[subsets[0]]
         gene_dict = {g: i for i, g in enumerate(gene_list)}
         # Check uppercase for up to 20 sets