Reverse Words in a String III

Given a string, you need to reverse the order of characters in each word within a sentence while still preserving whitespace and initial word order.

Example 1:

Input:
 "Let's take LeetCode contest"

Output:
 "s'teL ekat edoCteeL tsetnoc"

class Solution(object):
    def reverseWords(self, s):
        """
        :type s: str
        :rtype: str
        """
        l=s.split()
        l = map(lambda x: x[::-1], l)
        return ' '.join(l)
        #return ' '.join(x[::-1] for x in s.split())