python日志记录---logging模块

原文链接

传送门.

简单实用

import logging

logger = logging.getLogger("test")  # 创建实例
logger.setLevel(logging.INFO)  # 设置记录级别

ch = logging.StreamHandler()  # 控制台输出
ch.setLevel(logging.INFO)

fh = logging.FileHandler('test.log')  # 记录文件
fh.setLevel(logging.INFO)

# 格式化输出
formatter = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s')
# 设置格式
ch.setFormatter(formatter)
fh.setFormatter(formatter)
# 添加到logger中
logger.addHandler(ch)
logger.addHandler(fh)

# 输出不同级别的log
logger.info('this is information')
logger.error('this is error message')
logger.fatal('this is fatal message, it is same as logger.critical')
logger.critical('this is critical message')