Question

Im trying to get code completion for python in vim 7.3. When I install vim I use this configuration:

./configure --prefix=${HOME}/vim73 --enable-python3interp=yes --with-python3-config-dir=/home/etobkru/Python3/lib/python3.1/config 
make && make install

I copy this file:
http://vim.cybermirror.org/runtime/autoload/python3complete.vim
in to the ~/vim73/share/vim/vim73/autoload/ directory and in this file:
./share/vim/vim73/ftplugin/python.vim I change

setlocal omnifunc=pythoncomplete#Complete 

to

setlocal omnifunc=python3complete#Complete.

But when I press <c-x, c-o> I get an error message:

Error: Required vim compiled with +python3
E117: Unknown function: python3complete#Complete

and if I write :python3 I get

E319: Sorry, the command is not available in this version

Answer 1

It depends on your vim version and on how the OS provides Python and Python3, whether python and python3 are supported both. Else if compiled in at all, then the Python version you first use will be activated.

Check out the following thread and the one linked from there:
Vim 7.3: Python3 support