+# Export of a Mesh
+
+import os
+import tempfile
+import MEDLoader
+
+import salome
+salome.salome_init_without_session()
+
+from salome.geom import geomBuilder
+from salome.smesh import smeshBuilder
+
+geom_builder = geomBuilder.New()
+smesh_builder = smeshBuilder.New()
+
+# create a box
+box = geom_builder.MakeBox(0., 0., 0., 100., 200., 300.)
+idbox = geom_builder.addToStudy(box, "box")
+
+# create a mesh
+tetra = smesh_builder.Mesh(box, "MeshBox")
+tetra.Segment().NumberOfSegments(7)
+tetra.Triangle()
+tetra.Tetrahedron()
+
+# compute the mesh
+tetra.Compute()
+
+# export the mesh in a MED file
+medFile = tempfile.NamedTemporaryFile(suffix=".med").name
+tetra.ExportMED( medFile, 0 )
+
+# export a group in a MED file
+face = geom_builder.SubShapeAll( box, geom_builder.ShapeType["FACE"])[0] # a box side
+group = tetra.GroupOnGeom( face, "face group" ) # group of 2D elements on the <face>
+tetra.ExportMED( medFile, meshPart=group )
+
+# ========================
+# autoDimension parameter
+# ========================
+
+face = geom_builder.MakeFaceHW( 10, 10, 1, "rectangle" )
+mesh2D = smesh_builder.Mesh( face, "mesh2D" )
+mesh2D.AutomaticHexahedralization(0)
+
+# exported mesh is in 2D space because it is a planar mesh lying
+# on XOY plane, and autoDimension=True by default
+mesh2D.ExportMED( medFile )
+medMesh = MEDLoader.ReadUMeshFromFile(medFile,mesh2D.GetName(),0)
+print("autoDimension==True, exported mesh is in %sD"%medMesh.getSpaceDimension())
+
+# exported mesh is in 3D space, same as in Mesh module,
+# thanks to autoDimension=False
+mesh2D.ExportMED( medFile, autoDimension=False )
+medMesh = MEDLoader.ReadUMeshFromFile(medFile,mesh2D.GetName(),0)
+print("autoDimension==False, exported mesh is in %sD"%medMesh.getSpaceDimension())
+
+os.remove( medFile )
