@zaikunzhang excellent, thanks for your efforts! You should try to get PRIMA into SciPy. Is that the first “modern” Fortran in SciPy? I don’t think SciPy uses any Fortran “modules” yet, correct?
I think if you succeed to get your modern Fortran code into SciPy, that might turn the tide on Fortran. So I think this is a big deal. What needs to happen to get it done? Ask for help on this forum, just start a thread, create a plan and ask people to join your efforts. With enough people it will go quick.