Python reverse string (slow)

reverse_str1.py

def reverse_str(s: str):
    accumulator_str = []
    index = len(s)
    while index:
        index -= 1
        accumulator_str.append(s[index])
    return ''.join(accumulator_str)


print(reverse_str("abcde"))
print(reverse_str("abcdef"))
print(reverse_str("abcdeaaa"))