utils.py 文件源码

def create_logger(log_file=None):
    """
    Initialize global logger and return it.

    :param log_file: log to this file, or to standard output if None
    :return: created logger
    """
    formatter = logging.Formatter(fmt='%(asctime)s %(message)s', datefmt='%m/%d %H:%M:%S')
    if log_file is not None:
        os.makedirs(os.path.dirname(log_file), exist_ok=True)
        handler = logging.FileHandler(log_file)
        handler.setFormatter(formatter)
        logger = logging.getLogger(__name__)
        logger.addHandler(handler)

    handler = logging.StreamHandler()
    handler.setFormatter(formatter)
    logger = logging.getLogger(__name__)
    logger.addHandler(handler)
    return logger