PicoCTF Challenge: The NumbersΒΆ

https://play.picoctf.org/practice/challenge/68?category=2&page=1

numbers

from string import ascii_lowercase as alphabet
numbers = [
    16,
    9,
    3,
    15,
    3,
    20,
    6,
    "{",
    20,
    8,
    5,
    14,
    21,
    13,
    2,
    5,
    18,
    19,
    13,
    1,
    19,
    15,
    14,
    "}",
]
"".join([alphabet[number - 1] if type(number) is int else number for number in numbers])
'picoctf{thenumbersmason}'