python logging

LOG_FORMAT ="%(asctime)s - %(levelname)s - %(message)s"

logging.basicConfig(level=logging.DEBUG,filename='log.txt',format=LOG_FORMAT)

sh=logging.StreamHandler()

sh.setLevel(logging.DEBUG)

sh.setFormatter(logging.Formatter(LOG_FORMAT))

logger=logging.getLogger('logger')

logger.addHandler(sh)

以上代码，设定log的级别，同时输出到屏幕和指定的文件