python 字符串反转

python中字符串反转的方法：

#字符串的反转def reverse (s):rt = ''for i in range(len(s)-1, -1, -1):rt += s[i]return rtdef reverse2 (s):li = list(s)li.reverse()rt = "".join(li)return rtdef reverse3 (s):return s[::-1]def reverse4 (s):return "".join(reversed(s))from functools import reducedef reverse5 (s):return reduce(lambda x,y:y+x,s)

1、2比较传统，3、4、5比较新颖~。