logging

• 参考官方文档：https://docs.python.org/2/library/logging.html
• https://www.cnblogs.com/liujiacai/p/7804848.html

Level	Numeric value
CRITICAL	50
ERROR	40
WARNING	30
INFO	20
DEBUG	10
NOTSET	0

[root@shuffle-dev py_test]$ vim log.py
#!/usr/bin/env python
# -*- coding: utf-8 -*-

import logging

FORMAT='%(asctime)s - %(name)s - %(levelname)s - %(message)s'
logging.basicConfig(level=logging.INFO,format=FORMAT)                                                                              
logger=logging.getLogger(__name__)

logger.info("Start print log")

logger.setLevel(30)
logger.info("start print log")
logger.warning("Something may fail")

[root@shuffle-dev py_test]$ ./log.py  
2018-03-04 10:56:10,430 - __main__ - INFO - Start print log
2018-03-04 10:56:10,430 - __main__ - WARNING - Something may fail