A, log
1. Recommended sites: https: //www.cnblogs.com/yyds/p/6901864.html
The site is a log processing logging module Introduction
2.logging module provides logging module level functions, including the four major components.
Level 3 logs
(1) concern different users different program information
(2) :( grade level from small to large, the more to the more serious back) DEBUG \ INFO \ NOTICE \ WARING \ ERROR \ CRITICAL \ ALERT \ EMERGENCY
(3) I \ O operations should not be too frequent
(4) Log role:
. I debug; ii understand the operation of the software;.. Iii positioning problem analysis
(5) log information
. I time;. II sites; iii.level; iv content.
(6) Mature third party logs (multiple module is available)
log4j\log4php\logging
4.logging module
(1) log level (user defined)
DEBUG\INFO\WARING\ERROR\CRITICAL
(2) Initialization \ write log instances need to specify the level, only when the level is higher than or equal to the specified level will be recorded
(3) use
Direct use of the logging (the other components of the package); customize the logging four components directly
5.logging module-level log
Use the following several functions
logging.debug (msg, Arg *, ** kwargs) # Create a DEBUG level log logging.info (msg, * Arg, ** kwargs) # create a level INFO log logging.warning (msg, * Arg , ** kwargs) # create a level WARNING log logging.error (msg, * Arg, ** kwargs) # create a level ERROR log logging.critical (msg, * Arg, ** kwargs) # create a log level is CRITICAL in logging.log (level, * Arg, ** kwargs) # logging level to create a level of logging.basicConfig ( ** kwargs) # one-time configuration of the Logger root logging.basicConfig ( ** kwargs) one-time configuration of the root logger
Only works when the first call
Do not configure the default value logger
i Output:. sys.stderr
ii level:. WARNING
iii format:. level: log_name: content
(2) Examples
logging.debug("This is a debug log") #另一种写法 logging.log(logging.DEBUG,"This is a debug log")
Second, the source
d23_1_log.py
Address: https: //github.com/ruigege66/Python_learning/blob/master/d23_1_log.py
2.CSDN: https: //blog.csdn.net/weixin_44630050 (Xi Jun Jun Moods do not know - Rui)
3. Park blog: https: //www.cnblogs.com/ruigege0000/
4. Welcomes the focus on micro-channel public number: Fourier transform
