unique_code.py

# https://gist.github.com/bryanchow/8b5bd3c90ab41c82f68d95f7d96f28ed

import shortuuid
from django.conf import settings


DEFAULT_ALPHABET = "0123456789abcdef"


def make_unique_code(length=None, namespace=None, alphabet=None):
    """
    Generate a concise, unique identifier code.
    """
    alphabet = (
        alphabet or getattr(settings, 'UNIQUE_CODE_ALPHABET', DEFAULT_ALPHABET)
    )
    shortuuid.set_alphabet(alphabet)
    if namespace:
        code = shortuuid.uuid(name=namespace)
    else:
        code = shortuuid.uuid()
    return code[:length] if length is not None else code