If you can change the extension, then going for cffi seems like a no-brainer. It works on cpython, it's easier to use, safer etc. Usually the problem is if the

If you can change the extension, then going for cffi seems like a no-brainer. It works on cpython, it's easier to use, safer etc. Usually the problem is if the application/library is too big/too cumbersome. Then I think it's fair to call it legacy