[Daishiman]

It fits in my head. Its concepts are simple but orthogonal and extremely powerful. It doesn't ask me to take up complicated abstractions in order to do complicated things.

There's a library for everything out there.

I have never seen a language with greater uniformity of styles and idioms, with those style choices being right the vast majority of the time. You generally know what to expect, and I spend little time fighting with bugs or surprising behaviors.

For the things where its performance is unsatisfactory, it offers escape hatches. The tooling is good; there's better out there but I rarely find myself yearning for more than ipdb.

For scientific computing, it's simply top notch. I can't see myself using anything else for doing my data analysis until you're pushing the limits of performance.

Tracebacks are clear. Unlike JS, I know exactly where a piece of code is failing.

It lets you break rules when you need it to but it makes it obvious and the cultural pressure to not do it is high. Out of all the dynamically typed languages I know it'd the one I feel most comfortable pushing until the point where you need stronger validation.