>>Alexan+c4
At a certain point succinctness does more harm than good. Go captures nearly all of the sense of python's early values (
https://www.python.org/dev/peps/pep-0020/), without requiring all that much more in the way of boilerplate. So you have to if-check an error value here and there, no big deal. You should be handling errors anyway.
If Haskell's succinctness level is 1, then I would rate python's at 2, go's at 4, and java's at 20.