125-Valid-Palindrome.py

'''
A phrase is a palindrome if, after converting all uppercase letters into lowercase letters and removing all non-alphanumeric characters, it reads the same forward and backward. Alphanumeric characters include letters and numbers.

Given a string s, return true if it is a palindrome, or false otherwise.
'''

class Solution:
    def isPalindrome(self, s: str) -> bool:
        x = ''.join(e for e in s if e.isalnum())
        x = x.lower()
        if(x == x[::-1]):
            return True
        else:
            return False