Re: [f2py] Wraping Fortran code with allocatable arrays.

Hi,

module mymod
  implicit none
  real, dimension(:), allocatable :: abc
  real, dimension(:,:), allocatable :: deg
contains
  subroutine init
    implicit none
    ! do stuff on abc, deg
  end subroutine init
  subroutine calc
    implicit none
    ! do stuff on abc, deg
  end subroutine calc
end module mymod

From this, you can easily generate the wrapper mymod.pyf from

  $ f2py -m _mymod -h mymod.pyf mymod.f90

As Pearu mentioned, even the allocatable arrays are then exposed to
python as _mymod.mymod.abc and _mymod.mymod.deg.

Juergen



Benjamin Kutz wrote (Friday 16 July 2010 14:12:05):
> 
> Hi,
> 
> thanks for your fast answer.
> I still didn`t got the point. I just want to share these allocatable
> data arrays between the first and the second subroutine.
> I also knew the example out of the f2py manual, but I couldn`t realise
> it in my code, due to my limited knowledge in python and wrapping.
> Do you mean, that I have to write a fortran module for each allocatable?
> What does this module look like?
> At the moment I allocate in Fortan at the beginning with:
> 
>        subroutine init(abc,deg)
>        integer  max, max2
>        max= ...
>        max2=...
>        real   , dimension (:)  , allocatable  :: abc
>        real   , dimension (:,:)  , allocatable  :: deg
>        allocate (abc(max))
>        allocate (deg(max,max2))
>        call initialxyz (abc,deg)
>        end
> 
>        subroutine calc(abc,deg)
>        call solve(abc,deg)
>        if ( allocated( abc ) ) then
>              deallocate (abc)
>        ...
>        endif
> 
> I wrap both routines and want to call them one after another from python.
> Maybe you can help me with a little example? What does the foo.pyf have
> to look like?
> The problem is, that I have to wrap with f2py -c foo.pyf *.o. I can't
> wrap it directly from the foo.f90 routine.
> 
> Greetings
> Ben
> 
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