
class Palindrome(object):
    def str_to_list(payload: str) -> [] :
        return [i for i in payload if i.isalnum()]

    def isPalindrome(ls: []) -> bool:
        return {"RESULT": False for i in ls if ls.pop(0) != ls.pop()}


class StringConversion(object):
    def str_to_list(self, payload: str) -> []:
        return []

    def reverse_list(self, ls: []) -> []:
        return []

    def list_to_str(self, ls: []) -> str:
        return ''