ttp://www.sbbit.jp/article/art.asp?newsid=2658
↑の柴田淳氏のプレゼンでPython3000が「フロムスクラッチ」って
言ってるけど、これって完全に事実誤認だよな。
公式ドキュメントも読まないで発表してるのか？

ttp://www.python.org/dev/peps/pep-3000/
> Python 3000 will be implemented in C, and the implementation
> will be derived as an evolution of the Python 2 code base.
> This reflects my views (which I share with Joel Spolsky) on
> the dangers of complete rewrites. Since Python 3000 as a
> language is a relatively mild improvement on Python 2, we
> can gain a lot by not attempting to reimplement the language
> from scratch. I am not against parallel from-scratch
> implementation efforts, but my own efforts will be directed
> at the language and implementation that I know best.