function InsertPythonHeader()
    let l1 = getline(1)
    let l2 = getline(2)
    if  match('\#!/', l1) == 0
        exec 1
        normal O
        call setline(1,'#!/usr/bin/env python')
    endif
    if match("\#", l2) == 0 && (match("-", l2)  != 2 ¦¦ (match("code", l2) != 2))
        exec 2
        normal O
        call setline(2,'#-*- coding:utf-8 -*-')
    endif
endfunction

au FileType python call InsertPythonHeader()

#//python/5324