The description should say nil instead of None for ruby, but good job

Great use of defaultdict!

Just report it on https://github.com/Codewars/codewars-runner-cli/issues

please just create a Kumite proving that is possible :)

Already raised it as on Codewars github: https://github.com/Codewars/codewars.com/issues/276

raised: https://github.com/Codewars/codewars.com/issues/348

I would like the site to be faster. I also dislike that most of the time my code runs time out. I, and most people I think, would pay for a premium account (if those existed) if it ran better.

Can anyone explain how this works? I know what a partial function is (basically prefilling some of the args), but how is it used here?

No, stop

Very nice! Shame on codewars for mangling that.

Yes, codewards somehow separated the lines

Yeah, I hate the whitespace for the one Codewars decided to display. Here's what mine really looks like, which is quite nice:

maskify = lambda c: '#' * (len(c) - 4) + c[-4:]

This is really cool. Thanks for showing me this is possible with islice

This is the ugliest thing I've ever seen. I'm sorry.

I don't believe that's true, I just tested it out. Can you either say why you think so or give an example of an n that causes failure?