Guid/UUID on 22 characters using base57

guid22chars.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
#
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"""

    Guid/UUID on 22 characters.

    While it is true that base64 is a good enough encoding for a Guid, it's not necessarily a good part of an URL.

    I did some math (2^(128/22)) and discovered that 57 symbols are enough. So I chose such 57 symbols arbitrarily.

    This here is just proof of concept. Don't bother me with details.

"""
from uuid import uuid4

alphabet = 'vUEGCbqpPD65fzjuWMem2TcoXu831B4YxSJFdtAg7sy09haHwRQZUrNnV'
base = len(alphabet)
length = 22


def main():
    guid = uuid4()
    value = guid.int
    result = []
    for i in range(length):
        result.append(alphabet[int(value % base)])
        value /= base
    result.reverse()
    print(''.join(result))


if __name__ == '__main__':
    for iterations in range(20):
        main()