logging to stdout and file

logging_setup.py

import logging.config

logging.config.dictConfig(
    {
        "version": 1,
        "disable_existing_loggers": False,
        "formatters": {
            "oneline": {
                "format": "%(asctime)s [%(levelname)s] %(name)s: %(message)s"
            },
        },
        "handlers": {
            "console": {
                "level": "WARNING",
                "formatter": "oneline",
                "class": "logging.StreamHandler",
                "stream": "ext://sys.stdout",
            },
            "file": {
                "level": "DEBUG",
                "formatter": "oneline",
                "class": "logging.FileHandler",
                "filename": "debug.log"
            },
        },
        "loggers": {
            "": {  # for package maintainers, pass your package's name here instead of ""
                "handlers": ["console", "file"],
                "level": "DEBUG",
            },
        },
    }
)
log = logging.getLogger(__name__)
log.info("Foo")  # only to file
log.warning("Bar")  # to stdout and file