From 63817224be2bade36df8455de26bc905fb6ece8c Mon Sep 17 00:00:00 2001
From: "pre-commit-ci[bot]"
 <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Date: Wed, 10 Jul 2024 07:55:10 +0000
Subject: [PATCH] pre-commit auto-fixes

---
 src/pymatgen/core/composition.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/pymatgen/core/composition.py b/src/pymatgen/core/composition.py
index 5700873d19b..9d889d83780 100644
--- a/src/pymatgen/core/composition.py
+++ b/src/pymatgen/core/composition.py
@@ -487,7 +487,7 @@ def chemical_system(self) -> str:
         sorted alphabetically and joined by dashes, by convention for use
         in database keys.
         """
-        return "-".join(sorted(list(self.chemical_system_set)))
+        return "-".join(sorted(self.chemical_system_set))
 
     @property
     def num_atoms(self) -> float: