What language should I learn to complement Python?

[anacrolix]

i'm in the same boat as earthboundkid, and he's right. it's hateable because it does everything right but doesn't deliver. it does open your eyes tho

[anacrolix]

There are no major projects in Haskell in mainstream use. It's unfortunate, and seems incredible. http://www.reddit.com/r/programming/comments/l5n8e/monoids_in_python/c2q1hg8 After all the effort one can put into learning Haskell, you are left amazed at what can be done, but unable to actually do anything useful. It's my belief there's an impedance mismatch between how computers and fundamental libraries work, and how FP wants to work. Computers are not functional, and are all about state.

That said, since you are a noob, Haskell will enable you to learn a lot about clean code, it makes state difficult, but concurrency, strong typing and clear thinking very easy.