.vimrc + Python indentation

I had two separate projects (vcpynet-client and MXManager) which belong together. MXManager is a GUI in PyQt4 for vcpynet-client (which is now renamed to mx-download). That is worth another post. I needed to re-indent the two codes to have the same indentation style. In Ruby I tend to use 2 spaces. In Python it feels a bit more natural to use 4 spaces. These files used both styles which is ok as long as the indentation is strict in each separate file. Re-indenting in Vim should be simple. I defined these in my .vimrc:

set tabstop=4
set softtabstop=4
set shiftwidth=4
set shiftround
set expandtab
set autoindent
set paste

Vim re-indents the file in normal mode by ”gg=G”. Whoops, didn't work on my files. Guess I need to be more strict. I break some lines in a bit unorthodox fashion but Python 2.5 seems to accept it. Vim doesn't. Sed accomplised it, so for the record:

sed -i 's/\ \ /\ \ \ \ /g'