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. Happy hacking!