[petsc-users] How to map global vector to natural vector

[Xu, Donghui via petsc-users]

Dear PETSc Team,

I am working with petsc4py for my model. I had some experience of using PETSc 
in Fortran. In Fortran, I used the following subroutines:

call DMPlexCreateNaturalVector(dm, natural, ierr)
call DMPlexNaturalToGlobalBegin(dm,natural,X,ierr)
call DMPlexNaturalToGlobalEnd(dm,natural,X,ierr)

However, I found there are no such interfaces in petsc4py. Can you advise me on 
how to get the global vector in natural order with DMPLEX in petsc4py?

Thanks,
Donghui