Fortran derived types is a tricky issue. The problem is that Python can only interface with external C libraries. So to call Fortran it must use C code as proxy, which is what f2py does. Unfortunately a Fortran type does not map to a C struct on the binary level. The binary interface (ABI) is compiler dependent. The solution is to use "Fortran 2003 ISO C bindings" and let a Fortran subroutine map a C struct to a Fortran type. Use the Fortran C bindings to export the subroutine as a C callable void function. Now you can call the Fortran library from Python with ctypes, Cython, f2py, Swig, CXX, Boost.Python, Python C API, or whatever you prefer. In theory f2py or fwrap could do this mapping to Fortran derived types. But I am not sure if they do. I would not waste time on it, just write the wrapper by hand. It is not tedious if you only have to expose a few Fortran subroutines to Python. Sturla On 19.04.2012 03:25, Leonardo Mello wrote:

Hello!

I'm having a problem getting calls from FORTRAN in Python. If I put a structure (TYPE) in the code does not create the f2py arquivo.so And if I use of modules with the USE f2py file.so but creates the when I enter the python and try to import does not work.

Does anyone know how to use this library f2py you can help me.

Thank you

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