# Инвертирует строку
from ast import IsNot
from queue import PriorityQueue


def solution(string):
    return string[::-1]


#print(solution("qwerty"))

# ------------------------------------------------------------------------------- #

def unique_in_order(iterable):
    s = set(iterable)
    l = []
    for i in iterable:
        if i in s:
            l.append(i)
            s.remove(i)
    
    return l

    


# print(unique_in_order("qwereteyty"))

# ------------------------------------------------------------------------------- #

my_list = [2**i for i in range(1, 10, 1)]
print(my_list)

class NewList(list):
    def __getitem__(self, index):
        if index > 0:
            return super().__getitem__(index - 1)
        elif index < 0:
            return super().__getitem__(index)
        else:
            raise IndexError('Index error!')


new_list = NewList(my_list)
# print(new_list[0])
print(new_list[-2])