if Blender.Window.EditMode(1):
   EDITMODE=1
   Blender.Window.EditMode(0)

MESH3D = Object.GetSelected()[0]
if MESH3D.getType() == 'Mesh':
   MESH = MESH3D.getData()
   SIZE=MESH3D.getSize()
   for f in MESH.faces:
     if f.sel :   
       if DELETE :
         REMOVE.append(f)
       MESH2=NMesh.GetRaw()
       f1=NMesh.Face()
       v2=[0.0,0.0,0.0] 
       for v in f.v:
           v1 = Blender.NMesh.Vert (v.co[0],
                                    v.co[1],
                                    v.co[2])
           v=v1.co*MESH3D.matrix
           v1.co[:]=v[:]
 
           for n in [0,1,2]: v2[n]+=v1.co[n]
           MESH2.verts.append(v1)
           f1.v.append(MESH2.verts[len(MESH2.verts) - 1])
       for n in [0,1,2]: v2[n]/=len(f.v) 
       for v in f1.v:
            for n in [0,1,2]: v.co[n]-=v2[n]
       MESH2.faces.append(f1)
       OBJ=Object.New('Mesh')
       OBJ.link(MESH2)
       for n in [0,1,2]: v2[n]+= MESH3D.getLocation()[n] 
       OBJ.setLocation(v2)
       OBJ.setName('EXPLODE')
       SCENE.link(OBJ)
   if DELETE :
      for f in REMOVE :
          MESH.removeFace(f)
      MESH.update()  

if EDITMODE :
   [O.select(0) for O in Object.Get()]
   MESH3D.select(1)       
   Blender.Window.EditMode(EDITMODE)