I need a VTK format for my mesh

Hi,I am going to work with Fenics to run my problems. Actually, we should have vtk format for my meshes to run Fenics. There is 2 formats for vtk, one is vtp where it is for surface mesh and another format is vtu for volume mesh. I need a code for exporting my mesh to this formats. And for every surface I need a vtp outcome. For example, if I have 10 surfaces, and one volume, I need a code to give me 11 files, 10 files for each surfaces, and 1 file for my volume. Does it make sense? I could pay for this code who want to write it.