Reverse Word in a String(improve)

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

For example,
Given s = "the sky is blue",
return "blue is sky the".

Saw this code today, so depressed about my code. 

I guess I will need to start looking the basic functions....

class Solution:
    # @param s, a string
    # @return a string
    def reverseWords(self, s):
        return ' '.join(s.split()[::-1])