Add Python help in Vim

Vim

• Two Keys here
• 1. Read the output from the cmd line use the statement "r !echo hello" you will get the output in the current window
• 2. Redirect the output to the buffer window.
  execute "split" fnamescape(bufname)
  setlocal buftype=nofile
  setlocal nobuflisted

" Press leader r and the word under the curor will be search in the python help 
nnoremap <leader>r :<C-u>execute "!start cmd /k python C:\\Python27\\Lib\\pydoc.py " . expand("<cword>")<CR>
"Enter :Pyhelp "SearchWord" in the command line you will get the help about the word in a new buffer.
command! -nargs=1 -bar Pyhelp :call ShowPydoc(<f-args>)
function! ShowPydoc(what)
  let bufname = a:what . ".pydoc"
  " check if the buffer exists already
  if bufexists(bufname)
    let winnr = bufwinnr(bufname)
    if winnr != -1
      " if the buffer is already displayed, switch to that window
      execute winnr "wincmd w"
    else
      " otherwise, open the buffer in a split
      execute "sbuffer" bufname
    endif
  else
    " create a new buffer, set the nofile buftype and don't display it in the
    " buffer list
    execute "split" fnameescape(bufname)
    setlocal buftype=nofile
    setlocal nobuflisted
    " read the output from pydoc
    let l:cmd = "r !python C:\\Python27\\Lib\\pydoc.py " . a:what
    " execute "r !" . shellescape(s:pydoc_path, 1) . " " . shellescape(a:what, 1)
    execute cmd
  endif
  " go to the first line of the document
  1
endfunction