Very good argument for having that in the python language, that is true. It’s an even bigger ask, though. In Fortran you often need such data structures to kee

Very good argument for having that in the python language, that is true. It’s an even bigger ask, though. In Fortran you often need such data structures to keep track of results or to do IO. It’s a pain and I’ve so far not seen a usable library for it.