app/logger.py

import logging
from logging.config import dictConfig

LOGGING_CONFIG = {
    "version": 1,
    "disable_existing_loggers": False,
    "formatters": {
        "default": {
            "format": "[%(asctime)s] [%(levelname)s] %(name)s: %(message)s",
            "datefmt": "%Y-%m-%d %H:%M:%S",
        },
        "json": {
            "format": (
                '{"time": "%(asctime)s", '
                '"level": "%(levelname)s", '
                '"name": "%(name)s", '
                '"message": "%(message)s"}'
            ),
            "datefmt": "%Y-%m-%d %H:%M:%S",
        },
    },
    "handlers": {
        "console": {
            "class": "logging.StreamHandler",
            "formatter": "default",
        },
    },
    "root": {
        "level": "INFO",
        "handlers": ["console"],
    },
}

dictConfig(LOGGING_CONFIG)

logger = logging.getLogger("app")