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logging模块的简单使用

程序员文章站 2024-03-19 22:44:58
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Learn logging module of Python

There are more information on the internet about logging module of python, but I just record the part I used. So, if you want to learn more about it, you can search another information on the internet by Google.

section 1

basic-config

# -*- coding:utf-8
# python3

import logging

logging.basicConfig(filename='logging.log', 
                    format='[%(asctime)s:%(levelname)s]:%(message)s', 
                    level=logging.INFO)

logging.info('start logging')

when you check the file logging.log, you can see the output like this [2017-09-08 18:05:33,373:INFO]:start logging

print one log-file by multi-script

If you want to print logging into one log-file by multi-script, you can use the object logger.

For example, if you have two python script.

other.py

# other.py
# -*- coding:utf-8 -*-
# python3

import logging

logger = logging.getLogger('main.other')
logger.info('this is other info')
logger.warning('this is other warning')
logger.error('this is other error')

main.py

# main.py
# -*- coding:utf-8 -*-
# python3

import logging
import other

logging.basicConfig(filename='logging.log', 
                    format='[%(asctime)s:%(levelname)s]:%(message)s', 
                    level=logging.INFO)
logger = logging.getLogger('main')

logger.info('this is main log info')
logger.warning('this is main warning')

if you run main.py, you will create a new file logging.log, open it, you can see:

[2017-09-08 18:05:33,373:INFO]:this is main log info
[2017-09-08 18:05:33,373:WARNING]:this is main warning
[2017-09-08 18:05:33,373:INFO]:this is other info
[2017-09-08 18:05:33,373:WARNING]:this is other warning
[2017-09-08 18:05:33,373:ERROR]:this is other error
相关标签: python logging