Django setting.py celery beat configuration to trigger a function at every time interval

CELERY_BROKER_URL = 'redis://localhost:6379'
CELERY_RESULT_BACKEND = 'redis://localhost:6379'
CELERY_ACCEPT_CONTENT = ['application/json']
CELERY_RESULT_SERIALIZER = 'json'
CELERY_TASK_SERIALIZER = 'json'
CELERY_TIMEZONE = 'Asia/Kolkata'
CELERY_BEAT_SCHEDULE = {
    'createFolder': {
      'task': 'catalog.views.createFolder',
      'schedule': timedelta(seconds=30),

    }
}