pydoc integration for the best text editor on earth
pydoc.vim integrates Python documentation system into Vim. If you use Vim and Python, you want to use it :-)
pydoc.vim is an ftplugin and has to be installed in your ftplugin directory. Installing it in the plugin directory won't work.
Also note that you need a line like the following in your .vimrc file: filetype plugin on
You can find the complete documentation in the code itself.