class Solution(object):
    def findLUSlength(self, a, b):
        """
        :type a: str
        :type b: str
        :rtype: int
        """
        if a == b:
            return -1
        else:
            return max(len(a), len(b))


Add py solution for 521. Longest Uncommon Subsequence I
Add py solution for 521. Longest Uncommon Subsequence I

521. Longest Uncommon Subsequence I: https://leetcode.com/problems/longest-uncommon-subsequence-i/
