Basic Logging Dictconfig In Python

NOTE I'm aware of this answer but that doesn't work for me, I am hoping for a complete, self-contained working example. I'm trying to replace logging.basicConfig with dictConfig in

Solution 1:

There are a couple of things wrong with your posted configuration:

1. A logger with a name of 'root' is not the root logger. The root logger has a name of '' and is in general better configured using a 'root' entry outside the 'loggers' configuration, as described in this part of the logging documentation:

loggers - the corresponding value will be ...

...

root - this will be the configuration for the root logger. ...

2. You haven't specified a logging level, so it remains at the default level of WARNING, which means that info() messages won't get shown.

Solution 2:

The following code works perfectly for me:

import logging
import logging.config

log_dict = {
    'version': 1,
    'disable_existing_loggers': False,
    'formatters': {
        'standard': {
            'format': '%(asctime)s [%(levelname)s] %(name)s: %(message)s'
        },
    },
    'handlers': {
        'default': {
            'level': 'INFO',
            'formatter': 'standard',
            'class': 'logging.StreamHandler',
        },
        'file_handler': {
            'level': 'INFO',
            'filename': '/tmp/mylogfile.log',
            'class': 'logging.FileHandler',
            'formatter': 'standard'
        }
    },
    'loggers': {
        '': {
            'handlers': ['file_handler'],
            'level': 'INFO',
            'propagate': True
        },
    }
}
logging.config.dictConfig(log_dict)
logging.info("test")

And indeed, it's based on the answer mentioned above