I've been using Eclipse on my desktop, and it works wonders for a language like Java (and is still pretty useful for Python), but it lags like hell on my low-end laptop; until now I've been using Komodo editor for my Python code because of its syntax checks and popups for functions, but it's really lacking in any ability to run and test code and previously stated features seem to only work selectively.

Is it possible to get these features into emacs or a vi derivation? From what I've used of emacs, it only really has auto-indentation (which is mostly useless in python) and coloration of code. Moreover, do any of them have useful debugger features like in Eclipse?