title: What is the best way to get Python auto-completions/intellisense in Vim dynamically?
body: <p>I have looked at <code>pydiction</code>, <code>pysmell</code> and <code>vim-ipython</code>. Both <code>pydiction</code> and <code>pysmell</code> require generating the index before we can use it, and <code>vim-ipython</code> requires loading back and forth before the autocompletion works. However, none of them give the on-the-fly auto-completion working in different <code>virtualenv</code>, like what <code>Aptana</code> can do. </p>
  
  <p>Would an experienced Python-vimmer let us know please?</p>