Technically, your editor should take care of that for you, but some of them don't do it properly (and sometimes can't do it properly), and it really sucks.

Well, everything has a downside :)

Do any exist for Python or Perl?

1. People don't indent consistently. There are a lot of (imo, pointless) arguments about where to place the braces, etc. One of the advantages of the language forcing a style is that arguments about it are no longer necessary.

2. Why should tools be taking care of this? People indent to understand the code better. Everyone agrees that you have to do it. So what's the problem with the language forcing you to do it? I'd rather it be part of the language than an external tool enforcing it.

But in Python, you don't even have to worry about other people not indenting their code!

I guess the only complaint I might have is why bother thinking about indentation, ever? Throw in a couple of {} and now the tools can provide additional help.

When you edit Python, the tools can already help as much. The start of a block is obvious (def, if, for, etc), so tools indent for you. To dedent, just hit the right key (e.g. a backspace on an empty line in emacs) -- no harder than hitting the brace key.

I don't like Python either and prefer Perl. (In Python I did not like indentations, dicts, tuples, lists, and the IDLE gui.)