>>> get_queryset('Permission', app='django.contrib.auth').count() > 0
    True

def get_queryset(qs=None, app=DEFAULT_APP, db_alias=None):
    """
    >>> get_queryset('Permission', app='django.contrib.auth').count() > 0
    True
    """
    # app = get_app(app);
    # print 'get_model' + repr(model) + ' app ' + repr(app)
    if isinstance(qs, (djmodels.Manager, djmodels.query.QuerySet)):
        qs = qs.all()
    else:
        qs = get_model(qs, app=app).objects.all()
    if db_alias:
        return qs.using(db_alias)
    else:
        return qs