I have a situation where I need to load huge db fixture which is created by a function. The fixture is needed in all api tests. So I made a session fixture at conftest.py which would do it. But the problem is pytest throws following exception even though I have marked django_db:

E Failed: Database access not allowed, use the "django_db" mark to enable it.
Below is my code snippet.

from permission.helpers import update_permissions

pytestmark = [
        pytest.mark.django_db(transaction = True),]

@pytest.fixture(scope="session", autouse = True)
def permission(request):
        load_time_consuming_db_fixture()