The error handling is one of the worst parts of Go for me. Every call that can fail ends up being followed by 3 lines of error handling even if it's just propagating the error up. The actual logic get drowned out.
I would kill for some kind of `err_yield(err)` construct that handles propagating the error if it's the caller's problem to deal with.
That said, I discovered that Go has the ability to basically encapsulate one error inside of another with a message; for example, if you get an err because your HTTP call returned a 404, you can pass that up and say "Unable to contact login server: <404 error here>". But then the caller takes that error and says "Could not authenticate user: <login error here>", and _their_ caller returns "Could not complete upload: <authentication error here>" and you end up with a four-line string of breadcrumbs that is ostensibly useful but not very readable.
Python's `raise from` produces a much more readable output since it amounts to much more than just a bunch of strings that force you to follow the stack yourself to figure out where the error was.
