missing import

sagemath · May 25, 2020 · f4e1dec · f4e1dec
1 parent 0fbd87d
commit f4e1dec
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/src/sage/geometry/polyhedron/combinatorial_polyhedron/base.pyx b/src/sage/geometry/polyhedron/combinatorial_polyhedron/base.pyx
@@ -1479,6 +1479,7 @@ cdef class CombinatorialPolyhedron(SageObject):
 
             vertices = Vrep + facet_names
             edges = tuple((Vrep[j], facet_names[n_facets - 1 - i]) for i,facet in enumerate(facet_iter) for j in facet.ambient_V_indices())
+        from sage.graphs.digraph import DiGraph
         return DiGraph([vertices, edges], format='vertices_and_edges', immutable=True)
 
     def f_vector(self):