urllib.unquote()、urllib.urlencode(）

>>> 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'
>>>