Comment by gus_massa

Python with numba and @jit is quite fast https://numba.readthedocs.io/en/stable/user/jit.html but you need to know how to use it. (I don't know, but one of my coworkers does.)

There is a nice comparison of languages speed and sizes in https://benchmarksgame-team.pages.debian.net/benchmarksgame/...

I like Racket, but editing it without the help of a editor to match the parenthesis is imposible.