[python] Lift is short, I need python!

Example 1: Reverse words in a String

Given an input string, reverse the string word by word.

For example,

Given s = "

the sky is blue

",

return "

blue is sky the

".

class Solution:
# @param s, a string
# @return a string
def reverseWords(self, s):
if len(s)==0 :
return s
#reverse the whole string first
s=s[::-1]
sret=""
wordlist=s.split(' ')
for word in wordlist:
if sret!="" and word!="":
sret+=" "
word=word[::-1]
if word!="":
sret+=word
return sret