水星的随笔

背景

仅输出到文件中

logging.basicConfig(level=logging.DEBUG,
                format='%(asctime)s %(filename)s [line:%(lineno)d] %(levelname)s %(message)s',
                datefmt='%a, %d %b %Y %H:%M:%S',
                filename='myapp.txt',
                filemode='w')
logging.debug("这是一个debug")

同时输出到终端和文件中

    basic_format = '%(asctime)s %(filename)s [line:%(lineno)d] %(levelname)s %(message)s'
    date_format = '%Y-%m-%d %H:%M:%S'
    logging.basicConfig(format=basic_format, datefmt=date_format, level=logging.DEBUG)

    # 使用FileHandler输出到文件
    fh = logging.FileHandler("outout.log")
    formatter = logging.Formatter(basic_format, date_format)
    fh.setFormatter(formatter)
    fh.setLevel(logging.DEBUG)

    logger = logging.getLogger()  # 不加名称设置root logger
    logger.addHandler(fh)