little improvement

sagemath · Feb 20, 2020 · db79f1e · db79f1e
1 parent 3af855d
commit db79f1e
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/sage/geometry/polyhedron/combinatorial_polyhedron/base.pyx b/src/sage/geometry/polyhedron/combinatorial_polyhedron/base.pyx
@@ -1568,7 +1568,7 @@ cdef class CombinatorialPolyhedron(SageObject):
                         vertices[one] = 0
                         vertices[two] = 0
 
-        return all(x == 0 for x in vertices)
+        return not any(vertices)
 
     def is_pyramid(self, certificate=False):
         r"""