【Leetcode】【python】Number of Segments in a String

return len(s.split())

class Solution(object):
    def countSegments(self, s):
        """
        :type s: str
        :rtype: int
        """
        ss = list(s)
        count = 1
        flag = 0
        for i in range(len(ss)):
            if ord(ss[i])>=48 and ord(ss[i])<=57:
                flag = 0
                continue
            elif ord(ss[i])>=65 and ord(ss[i])<=90:
                flag = 0
                continue
            elif ord(ss[i])>=97 and ord(ss[i])<=122:
                flag = 0
                continue
            else: 
                if flag == 1:
                    flag = 0
                    continue
                # print(ss[i], ord(ss[i]))
                count +=1
                flag = 1
        return count

Input:
"love live! mu'sic forever"
Output:
5
Expected:
4