<s> from django . core . checks import register , Tags , Warning <EOL> from django . conf import settings <EOL> @ register ( Tags . compatibility ) <EOL> def check_settings ( app_configs , ** kwargs ) : <EOL> """<STR_LIT>""" <EOL> checks = [ ] <EOL> if '<STR_LIT>' not in settings . AUTHENTICATION_BACKENDS : <EOL> msg = ( "<STR_LIT>" <EOL> "<STR_LIT>" <EOL> "<STR_LIT>" ) <EOL> checks . append ( Warning ( msg , id = '<STR_LIT>' ) ) <EOL> return checks </s>
