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1234567891011121314151617181920212223ALPHABET = "234567abcdefghijklmnopqrstuvwxyz"DECODING_MAP = {v: k for k, v in enumerate(ALPHABET)}
def encode_int(data: int, length: int) -> str: encoded = "" for i in range(0, length, 5): c = data & 0b11111 data >>= 5 encoded += ALPHABET[c] return "".join(reversed(encoded))
def decode_int(data: str) -> int: decoded = 0 for letter in data: if letter not in DECODING_MAP: raise ValueError("Non-base32-sortable digit found") decoded <<= 5 decoded += DECODING_MAP[letter] return decoded