In article <514e5e71$0$30001$c3e8da3$5496439d at news.astraweb.com>, Steven D'Aprano <steve+comp.lang.python at pearwood.info> wrote: > As far as I know, there is no Python implementation that automatically > interns strings which are not valid identifiers. "some string" is not a > valid identifier, due to the space. I stand corrected. And somewhat humbled.