Python给定一个句子倒序输出单词以及字母的方法

#!/usr/bin/python
# -*- coding: utf-8 -*-
def rever(sentence):
  newwords = []
  words = sentence.split()
  words.reverse()
  space = ' '#单词之间一个间隔
  for word in words:
    newword = []
    new = ''#单词的字母间无间隔
    l = len(word)
    for i in range(l):
      newword.append(word[l-i-1])
    neww = new.join(newword)
    newwords.append(neww)
  print space.join(newwords)
rever('what\'s your problem man ?')

? nam melborp ruoy s'tahw