Hi Christian,
I send this off-list as there are probably a lot more knowledgeable
people around there.
However, I don't entirely understand your problem (I'm not on the f2py
list).
What happens if you try:
C file hello.f
subroutine foo(a)
integer a
Cf2py intent(in) a
print*, "Hello from Fortran!"
print*, "a=",a
end
f2py -m -c hello hello.f
That usually did the trick for me. What are your error messages, if you
try the above?
Best regards,
Hanno
On Nov 14, 2006, at 12:09 PM, Christian Meesters wrote:
> Hoi,
>
> thanks to Robert Kern who helped me out yesterday on the f2py-list, I
> was able
> to make some progress in accessing FORTRAN from Python. But only some
> progress ...
>
> If I have the following code, named 'hello.f':
> C File hello.f
> subroutine foo (a)
> integer a
> print*, "Hello from Fortran!"
> print*, "a=",a
> end
>
> and compile it with g77 -shared -fPIC hello.f -o hello.so
>
> and then start python, I get the following:
>>>> from numpy import *
>>>> from ctypes import c_int, POINTER, byref
>>>> hellolib = ctypeslib.load_library('hello', '.')
>>>> hello = hellolib.foo_
>>>> hello(42)
> Hello from Fortran!
> Segmentation fault
>
> Can anybody tell me where my mistake is? (Currently python 2.4.1 (no
> intention
> to update soon), the most recent ctypes, and numpy '1.0.dev3341' from
> svn.)
>
> And a second question: Are there simple examples around which show how
> to pass
> and retrieve lists, numpy arrays, and dicts to and from FORTRAN?
> Despite an
> intensive web search I couldn't find anything.
>
> TIA
> Christian
>
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--
Hanno Klemm [EMAIL
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ETH Zurich tel:
+41-1-6332580
Institute for theoretical physics mobile: +41-79-4500428
http://www.mth.kcl.ac.uk/~klemm
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