def clean_up(self):
        self.session.close()
Return the database that will be used if this query is executed now
dataset/ETHPy150Open owtf/owtf/framework/db/db.py/DB.clean_up--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.5/django/db/models/query.py/RawQuerySet.db