[almost]

Python has 2to3 which is the same kind of thing

[Queue29]

There are a lot of things 2to3 can't fix, so the user has to go back and change things by hand anyway.

[almost]

That appears to be true for gofix too and probably any tool of that kind...

[rogpeppe]

it's less of a problem for gofix because Go's static typing means it's easy to be much more precise about which methods and functions are actually being used.