To return your challenge to Django, do you have an easy way to compose queries as neatly?

``` issues_query = Issue.objects.filter(location__contained=bounding_box) if all_of: for tag in all_of: issues_query = issues_query.filter(issuetag__tag=tag) if any_of: issues_query = issues_query.filter(issuetag__tag__in=any_of) ```