venv/lib/python3.11/site-packages/authlib/integrations/django_oauth1/nonce.py

from django.core.cache import cache


def exists_nonce_in_cache(nonce, request, timeout):
    key_prefix = 'nonce:'
    timestamp = request.timestamp
    client_id = request.client_id
    token = request.token
    key = f'{key_prefix}{nonce}-{timestamp}-{client_id}'
    if token:
        key = f'{key}-{token}'

    rv = bool(cache.get(key))
    cache.set(key, 1, timeout=timeout)
    return rv