Clojure (either native JVM or Babashka) Once you've got a repl up and running the JVM launch time isn't an issue and repl driven development lends itself well

Clojure (either native JVM or Babashka) Once you've got a repl up and running the JVM launch time isn't an issue and repl driven development lends itself well to data munging/exploration Clojure's data centricity (functional, everything's a sequence, strong data manipulation std lib) really makes it a dream for these quick and dirty data transformation/exploration jobs If you want to get fancy, https://github.com/nextjournal/clerk https://github.com/nextjournal/clerk (notebook interface) and https://github.com/techascent/tech.ml.dataset https://github.com/techascent/tech.ml.dataset (data frame library) will get you there