Install f2py with python3

Question

I need to call routines from Fortran modules within Python. I did it with f2py and python2.7. It worked pretty well.

Now, I have to use it with python3 but f2py does not seem to be compatible with python3.

I see that some people use a version called f2py3, but it is neither available through pip, not through macports (I am using a Mac). Also, python3+numpy+f2py seem to be already integrated in Fedora.

Does anyone have managed to use f2py3 (or its equivalent) with python3 on a Mac? If not, what alternate solution do you propose to link Fortran libraries with python3?

Answer 1

As an alternative, you can use ctypes and fortran-iso-c-binding to call Fortran routines without relying on f2py. The downside of this approach is that you need to specify the interfaces yourself.

Here is an example I posted on SO some time ago.

Answer 2

f2py comes with numpy and based on this January 2020 activity on github, it seems clear that f2py is currently maintained.