<s> """<STR_LIT>""" <EOL> import datetime <EOL> from django . conf import settings <EOL> from django . db import models <EOL> from django . utils . translation import ugettext_lazy as _ <EOL> from django . contrib . contenttypes . models import ContentType <EOL> from django . utils . encoding import force_text <EOL> from lino import mixins <EOL> from lino . api import dd , rt <EOL> from lino . core import actions <EOL> from lino . utils import dblogger <EOL> from lino . core . utils import resolve_model </s>
