log文件生成

import logging
fh = logging.FileHandler(filename='xxx.log',encoding='utf-8')
fh1 = logging.FileHandler(filename='xxx2.log',encoding='utf-8')
sh = logging.StreamHandler()
logging.basicConfig(level=logging.INFO,
                    handlers=[fh,sh,fh1],
                    datefmt='%Y-%m-%d %H:%M:%S',
                    format='%(asctime)s - %(name)s[%(lineno)d] - %(levelname)s -%(module)s:  %(message)s')
logging.debug('debug message')      # 情况越轻
logging.info('info message')        # 信息类的日志
logging.warning('warning message')
logging.error('error message')
logging.critical('critical message')

# logging日志分为5个等级
# 默认只显示warning等级以上的信息
import time
import logging
from logging import handlers
sh = logging.StreamHandler()
rh = handlers.RotatingFileHandler('myapp.log', maxBytes=512,backupCount=5,encoding='utf-8')
fh = handlers.TimedRotatingFileHandler(filename='myapp2.log', when='s', interval=5, encoding='utf-8')
logging.basicConfig(level=logging.INFO,
                    handlers=[rh,fh,sh],
                    datefmt='%Y-%m-%d %H:%M:%S',
                    format='%(asctime)s - %(name)s[%(lineno)d] - %(levelname)s -%(module)s:  %(message)s')
while True:
    logging.warning('您输入了错误的数字,程序造成了一次异常,已被处理')
    time.sleep(0.3)