I think that Python version is unfairly more complicated than JS and Ruby versions because of this ".each" functionality (though it is possible to do).
It would have been much easier to pass lambda/function in the same way as in JS/Ruby version.

Just in case, try to "reset" the trainer (do not forget to copy your code before). Or maybe try in a few hours (updates can effectively take some time)

should be good, now. Keep me posted if you encounter other problems.

damn, forgot about that. Let my look (again... :s ) at this.