class StringReversal:
    def __init__(self, my_string):
        self.perform_task(my_string)

    @staticmethod
    def perform_task(my_string):
        string_length = len(my_string)
        return_string = ""
        while string_length > 0:
            return_string = return_string + my_string[string_length-1]
            string_length -= 1

        print return_string
        return return_string

if __name__ == '__main__':
    s = StringReversal("Hello")
