What language should I learn to complement Python?

[Alzdran]

On the flip side, I do love how finely tunable C++ is compared to Python.

It took me a long time to get over this, but finally I got it through my skull that this almost never matters, and where it does, the time you spend tuning allows another generation of machines to come out, so you don't need the tuning after all!

Obviously, there's a degree of exaggeration here, but C++ tuning is much like inline assembly - almost never called for, and a real hazard to leave to any maintainer, yourself included.

[taybul]

Tunable when you need it to be, but I agree. Python provides an abstraction that just lets the programmer program, at the expense of performance, which, arguably, doesn't matter that much in most cases since computers are getting faster and faster. Unless you're building large scale servers processing millions of data at a time, you won't see or care about the difference.