On Sat, May 2, 2015 at 7:10 PM, Marko Rauhamaa <ma...@pacujo.net> wrote: > Note: Scheme is my favorite language and I use tail recursion all the > time. I also think eliminating tail recursion is such a low-hanging > fruit that even CPython should just pick it. However, I wouldn't use the > fibonacci sequence to justify anything at all about a programming > language.
Actually, it isn't such low-hanging fruit. As has been mentioned in this thread already, Guido is against anything that disrupts tracebacks, and optimizing tail recursion while maintaining traceback integrity is rather harder. In the situations where it really is simple, you can always make the change in your own code anyway. Often, the process of converting recursion into tail recursion warps the code to the point where it's abusing recursion to implement iteration anyway, so just make it iterative. ChrisA -- https://mail.python.org/mailman/listinfo/python-list
