Method isPalindrome

String/ValidPalindrome.py:26–38

:type s: str :rtype: bool

(self, s)

class Solution(object):
    def isPalindrome(self, s):
        """
        :type s: str
        :rtype: bool
        """
        
        if not s:
            return True
        
        s = s.lower()
        x = ''.join(re.findall(r'[a-z0-9]{1}', s))
        
        return x == x[::-1]