Agreed. At the end I turned to Python + Fortran (via the awesome f2py) for almost everything, although using two languages is far from ideal. It confuses studen

Agreed. At the end I turned to Python + Fortran (via the awesome f2py) for almost everything, although using two languages is far from ideal. It confuses students which hardly know just one of them, plus there is the cognitive burden of using two different sets of conventions (e.g., zero-based vs one-based array indices) and models of computation. I don't know how much help I could give you regarding your script, but I would be happy to help. Feel free to contact me, my email is maurizio dot tomasi at outlook dot com.