Python & Go

[Michele Simionato]

Let me add a quote from the FAQ:

"""
Why does Go not have exceptions?

Exceptions are a similar story. A number of designs for exceptions
have been proposed but each adds significant complexity to the
language and run-time. By their very nature, exceptions span functions
and perhaps even goroutines; they have wide-ranging implications.
There is also concern about the effect they would have on the
libraries. They are, by definition, exceptional yet experience with
other languages that support them show they have profound effect on
library and interface specification. It would be nice to find a design
that allows them to be truly exceptional without encouraging common
errors to turn into special control flow that requires every
programmer to compensate.

Like generics, exceptions remain an open issue.
"""