chore: formatting

chemosim-lab · Dec 23, 2024 · aaede6c · aaede6c
1 parent 02061c0
commit aaede6c
Showing 1 changed file with 7 additions and 3 deletions.
diff --git a/prolif/residue.py b/prolif/residue.py
@@ -50,10 +50,14 @@ def __eq__(self, other):
 
     def __lt__(self, other):
         def chain_key(chain):
-            # Handles the case where the two chains are of different types (e.g., None and str)
+            # Handles the case where the two chains are of different types
+            # e.g., None from WAT123, and str from ALA42.A
             return (chain is not None, chain)
-
-        return (chain_key(self.chain), self.number) < (chain_key(other.chain), other.number)
+
+        return (chain_key(self.chain), self.number) < (
+            chain_key(other.chain),
+            other.number,
+        )
 
     @classmethod
     def from_atom(cls, atom):