python - django logging "No handlers could be found for logger" -

i've searched on similar questions, , nothing helped. i've created 'universal' logger this:

'': {     'handlers': ['logfile','console'],     'level': 'warning',     'propagate': true, }, 

in order able write

import logging log = logging.getlogger(__name__) 

and logger in file of django-application(seen approach somewhere on so), , several days ago working me, not , not understand why.

there whole logging-settings:

logging = {     'version': 1,     'disable_existing_loggers': false,     'formatters': {         'standard': {             'format' : "[%(asctime)s] %(levelname)s [%(name)s:%(lineno)s] %(message)s",             'datefmt' : "%d/%b/%y %h:%m:%s"         },     },     'handlers': {         'mail_admins': {             'level': 'error',             'class': 'django.utils.log.adminemailhandler'         },        'logfile': {             'level':'warning',             'class':'logging.handlers.rotatingfilehandler',             'filename': "/opt/telefacer_1/var/log/inapplog",             'maxbytes': 50000,             'backupcount': 2,             'formatter': 'standard',         },         'console':{             'level':'warning',             'class':'logging.streamhandler',             'formatter': 'simple'         },     },     'loggers': {         'django.request': {             'handlers': ['mail_admins'],             'level': 'error',             'propagate': true,         },         '': {             'handlers': ['logfile','console'],             'level': 'warning',             'propagate': true,         },     } } 

i see references both simple , standard formatter though standard defined.