Love Ruby method chaining and .tap(). Ruby was the language I could most “think in” and write a lot of stuff then have it just work like I figure it would. Python makes me roll my eyes having to explicitly handle a bunch of random small errors, like it’s being overly pedantic. I’m also not a fan of significant whitespace, which is another reason I prefer JSON to YAML (along with always having to look up if I need a hyphen on a line or not).