aaa='f u c k'.split(' ')#切割字符串
aaa.reverse()#翻转列表
aaa=''.join(aaa)#连接字符串#####################################print''.join('f u c k'.split(' ')[::-1])#一行版本
import re
#导入正则表达式''.join(re.split(r' ','f u c k')[::-1])
''.join(reversed('f u c k'.split(' ')))
''.join(reversed(re.split(' ','f u c k')))