Julia is not even at 1.0 yet, and will be full of holes until at least then. It's still a wonderful language for technical/scientific computing, but you don't want it to be your only language if you have to make diverse real things.
That's almost the complete opposite of Python, which has the ugliness of real world use (eg, 2.7 vs 3), but also has those thousands or real world hardened packages.
