Base58.py checking decode of '1' and '11' etc

base58.py

from hashlib import sha256
 
digits58 = '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz'
 
def decode_base58(bc, length):
    n = 0
    for char in bc:
        n = n * 58 + digits58.index(char)
    return n.to_bytes(length, 'big')
 
if __name__ == '__main__':
    print(decode_base58('1', 1))
    print(decode_base58('11', 2))
    print(decode_base58('111', 3))

gistfile1.txt

$ python3.3 base58.py
b'\x00'
b'\x00\x00'
b'\x00\x00\x00'