django1/django/contrib/sessions/management/commands/clearsessions.py

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from django.conf import settings
from django.core.management.base import NoArgsCommand
from django.utils.importlib import import_module
class Command(NoArgsCommand):
help = "Can be run as a cronjob or directly to clean out expired sessions (only with the database backend at the moment)."
def handle_noargs(self, **options):
engine = import_module(settings.SESSION_ENGINE)
try:
engine.SessionStore.clear_expired()
except NotImplementedError:
self.stderr.write("Session engine '%s' doesn't support clearing "
"expired sessions.\n" % settings.SESSION_ENGINE)