--- /dev/null
+# Free Borders
+
+import salome
+salome.salome_init_without_session()
+
+import SMESH
+from salome.geom import geomBuilder
+from salome.smesh import smeshBuilder
+
+geom_builder = geomBuilder.New()
+smesh_builder = smeshBuilder.New()
+
+# create open shell: a box without one plane
+box = geom_builder.MakeBox(0., 0., 0., 20., 20., 15.)
+FaceList = geom_builder.SubShapeAll(box, geom_builder.ShapeType["FACE"])
+FaceList.remove(FaceList[5])
+box = geom_builder.MakeShell(FaceList)
+idbox = geom_builder.addToStudy(box, "box")
+
+# create a mesh
+mesh = smesh_builder.Mesh(box, "Mesh_free_borders")
+algo = mesh.Segment()
+algo.NumberOfSegments(5)
+algo = mesh.Triangle()
+algo.MaxElementArea(20.)
+mesh.Compute()
+
+# criterion : free borders
+aFilter = smesh_builder.GetFilter(SMESH.EDGE, SMESH.FT_FreeBorders)
+anIds = mesh.GetIdsFromFilter(aFilter)
+
+# print the result
+print("Criterion: Free borders Nb = ", len(anIds))
+j = 1
+for i in range(len(anIds)):
+ if j > 20: j = 1; print("")
+ print(anIds[i], end=' ')
+ j = j + 1
+ pass
+print("")
+
+# create a group
+aGroup = mesh.GetMesh().CreateGroup(SMESH.EDGE, "Free borders")
+aGroup.Add(anIds)