Skip to content

Latest commit

 

History

History
76 lines (47 loc) · 1.33 KB

146.md

File metadata and controls

76 lines (47 loc) · 1.33 KB

logging 模块:记录日志

logging 模块可以用来记录日志:

In [1]:

import logging

logging 的日志类型有以下几种:

  • logging.critical(msg)
  • logging.error(msg)
  • logging.warning(msg)
  • logging.info(msg)
  • logging.debug(msg)

级别排序为:CRITICAL > ERROR > WARNING > INFO > DEBUG > NOTSET

默认情况下,logging 的日志级别为 WARNING,只有不低于 WARNING 级别的日志才会显示在命令行。

In [2]:

logging.critical('This is critical message')
logging.error('This is error message')
logging.warning('This is warning message')

# 不会显示
logging.info('This is info message')
logging.debug('This is debug message')
CRITICAL:root:This is critical message
ERROR:root:This is error message
WARNING:root:This is warning message

可以这样修改默认的日志级别:

In [3]:

logging.root.setLevel(level=logging.INFO)

logging.info('This is info message')
INFO:root:This is info message

可以通过 logging.basicConfig() 函数来改变默认的日志显示方式:

In [4]:

logging.basicConfig(format='%(asctime)s: %(levelname)s: %(message)s')

logger = logging.getLogger("this program")

logger.critical('This is critical message')
CRITICAL:this program:This is critical message