core-extra/package/etc/logging.conf

{
	"version": 1,
	"handlers": {
		"console": {
			"class": "logging.StreamHandler",
			"formatter": "default",
			"level": "DEBUG",
			"stream": "ext://sys.stdout"
		}
	},
	"formatters": {
		"default": {
			"format": "%(asctime)s - %(levelname)s - %(module)s:%(funcName)s - %(message)s"
		}
	},
	"loggers": {
	    "": {
	        "level": "WARNING",
            "handlers": ["console"],
            "propagate": false
        },
        "core": {
            "level": "INFO",
            "handlers": ["console"],
            "propagate": false
        },
        "__main__": {
            "level": "INFO",
            "handlers": ["console"],
            "propagate": false
        }
    }
}