LeetCode - Check for Palindrome - Check for 3 line code solution on my git repo

Check_Palindrome.py

#Can you believe I wrote another solution with just 3 lines of code? Check my Git repo for the actual code! 
class Palindrome:
    def text(self, set_of_chars):
        rev = clean = ''
        
        for char in set_of_chars[::-1]:
            if char.isalnum():
                rev = rev + char.lower()
        
        for ele in set_of_chars[::1]:
            if ele.isalnum():
                clean = clean + ele.lower()
        
        print(clean == rev)
        
if __name__ == '__main__':
    cObj = Palindrome()
    cObj.text(str(input()))