[Python-Dev] Re: PEP 622 version 2 (Structural Pattern Matching)

On 12/07/2020 23:20, Guido van Rossum wrote:

So can we please lay this one to rest?

Sure. One small thing before we leave it; I've decided I don't care about the special cases of not using _. to lead class names, but forbidding **_ in mapping patterns seems unnecessary. I know it's redundant, but I can imagine using it for emphasis. I can't think of anywhere else the language forbids something just because it isn't needed, though I didn't get a lot of sleep last night and I could well be missing something obvious :-)

Can I use pattern matching to pull byte strings apart? I thought I could, but trying it out in the playground didn't work at all. :-(