updated the return statement of is_brace()

sagemath · Dec 21, 2024 · d670168 · d670168
1 parent cb4d3d1
commit d670168
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/sage/graphs/matching_covered_graph.py b/src/sage/graphs/matching_covered_graph.py
@@ -2693,7 +2693,7 @@ def dfs(v, visited, neighbor_iterator):
                     for u, v, w in self.edge_iterator()
                     if (u in X) ^ (v in X)]
 
-                return False, C, X
+                return (False, C, set(X))
 
         return (True, None, None) if coNP_certificate else True