logging

输出日志到控制台：

import logging
logging.basicConfig(level=logging.INFO,format='%(asctime)s - %(filename)s[line:%(lineno)d] - %(levelname)s: %(message)s')
logging.info('...')

import logging
logger=logging.getLogger('mmmm')   
logging.basicConfig(level=logging.INFO,format='%(name)s--%(asctime)s - %(filename)s[line:%(lineno)d] - %(levelname)s: %(message)s')
logger.info('...mmmmmmmmmm')

输出日志到文件

import logging
logger=logging.getLogger()  # name 可无

logger.setLevel(logging.INFO)
formatter = logging.Formatter("%(asctime)s - %(filename)s[line:%(lineno)d] - %(levelname)s: %(message)s")

fh=logging.FileHandler('logger.txt')
fh.setFormatter(formatter)
logger.addHandler(fh)

sh = logging.StreamHandler()  # 往屏幕上输出
sh.setFormatter(formatter)  # 设置屏幕上显示的格式
logger.addHandler(sh)

logger.info('....')