>>> print 'xn--'+'教育部'.decode('gbk').encode('punycode')+'.cn'

xn--wcvs22dzol.cn

>>>

___________________________________________

>>>import urllib

>>>s="%D6%D0%B9%FA"

>>>urllib.unquote(s)

'\xd6\xd0\xb9\xfa'

>>>s='中国'

>>>urllib.unquote(s)

'%D6%D0%B9%FA'

>>> s={'a':'中国'}

>>> urllib.urlencode(s)

'a=%D6%D0%B9%FA'

>>>