Re: [f2py] Acces to used module variables

Thank you for your quick response!
It works!

One Note:

In the second example it's also possible to write
f2py -c test.pyf mine.f90 pimodule.o

I have another last question:
In FAQ there is a note regarding derived types. Is this f2py-version of Jeffrey Hagelberg available?

Greetings
Malte

-----Original Message-----
From: f2py-users-bounces-Y4l6ocDipWCuvFJfX82//[email protected] on behalf of Pearu Peterson
Sent: Thu 29.07.2010 13:44
To: For users of the f2py program
Subject: Re: [f2py] Acces to used module variables
 
Hi,
The first solution to your problem: wrap both modules with f2py.

For example:

f2py -m test -c pimodule.f90 mine.f90
>>> import test
>>> test.mine.init()
>>> test.mine.e
    array(2.7000000476837158, dtype=float32)
>>> test.pimodule.pi
    array(3.1400001049041748, dtype=float32)

The second solution is to tell f2py to wrap also pi. For example,

module mine
       use pimodule
!f2py real::pi
       implicit none
       real::e
       contains
       subroutine init()
               call initpi()
               e = 2.7
       end subroutine init
end module mine

f2py -m test mine.f90 -h test.pyf
f2py -c test.pyf pimodule.f90 mine.f90
>>> import test
>>> test.mine.init()
>>> test.mine.e
    array(2.7000000476837158, dtype=float32)
>>> test.mine.pi
    array(3.1400001049041748, dtype=float32)

Regards,
Pearu

On Thu, Jul 29, 2010 at 1:51 PM,  <[email protected]> wrote:
> Hello,
> I have a question about the functionality of f2py (actually its the functionality of fortran):
> Is it possible, to access variables, that are not deklared in my wrapped module, but in a module that is imported by my wrapped module?
>
> Here is an example:
>
> module mine
>        use pimodule
>        implicit none
>        real::e
>        contains
>        subroutine init()
>                call initpi()
>                e = 2.7
>        end subroutine init
> end module mine
>
> module pimodule
>        implicit none
>        real::pi
>        contains
>        subroutine initpi()
>                pi = 3.14
>        end subroutine initpi
> end module pimodule
>
> Now I wrap 'mine' and would like to read the variables "e" and "pi" from python.
> To access e is not the problem, the problem is pi!
>
> I do something like this:
>
> Python 2.6.4 (r264:75706, Jan 21 2010, 07:46:28)
> [GCC 4.1.2 20070115 (SUSE Linux)] on linux2
> Type "help", "copyright", "credits" or "license" for more information.
>>>> from test import *
>>>> print mine.__doc__
> e - 'f'-scalar
> init - Function signature:
>  init()
>
>>>> mine.init()
>>>> mine.e
> array(2.7000000476837158, dtype=float32)
>>>> mine.pi
> Traceback (most recent call las):
>  File "<stdin>", line 1, in <module>
> AttributeError: pi
>>>> mine.pimodule.pi
> Traceback (most recent call last):
>  File "<stdin>", line 1, in <module>
> AttributeError: pimodule
>
> Do you know a solution for this problem? Maybe with the PUBLIC option?
>
> Thank you in advance
> Malte
>
> -----------------------------------------------------------------------------
> Deutsches Zentrum für Luft- und Raumfahrt e.V.
> in der Helmholtz-Gemeinschaft
>
> Malte Mauelshagen
>
> Lilienthalplatz 7
> 38108 Braunschweig
> Tel.: 0531/295-2483
>
>
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