I've installed [vim python-mod](http://github.com/klen/python-mode)
and getting the following error:

```
Error detected while processing [..]/.vim/bundle/python-mode/autoload/pymode/virtualenv.vim:
line    3:
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "[..]/.vim/bundle/python-mode/pymode/__init__.py", line 3, in <module>
    from __future__ import absolute_import
ImportError: No module named __future__

```

`python --version` => `Python 2.7.9`