I'd like to consider the idea of migrating the test set of all the python modules to [[ https://docs.pytest.org | pytest ]]
It would help for several aspects, especially via the [[ https://docs.pytest.org/en/latest/fixture.html | test fixtures mechanism,]] like make it easier to write tests for things like celery tasks (see [[ http://docs.celeryproject.org/en/latest/userguide /testing.html#fixture | celery fixtures ]] for example)
The main problem is that it will most probably require to migrate all tests at once, which seems quite a job.