Yup I noted this in the earlier post with the 
however it is really a very annoying note, given that even the most mature alternate Python implementation (pypy) actually has a fork of NumPy and a specialized compatibility layer for every function of a particular NumPy version…
The state of “alternate python implementations” is generally such a mess that it isn’t what people think of when they talk about Python.
There’s no indication whatsoever in the ctypes documentation of any of this either.
Yup, but it also hasn’t been touched in many years.
In any event, extension modules look hideously complex. So now I do finally understand why you would want to use f2py to automate it!
I’m glad we were able to reach here, I was also very confused for so long about the ctypes advice here 