Python Module-logging module (i)

Logging module for writing log files

There are 5 levels, debug (), info (), warning (), error (), and Critical (), the highest level is critical ()

Debug () debug mode, info () is the normal information, warning () is warning, error () is wrong, critical () is a serious issue

Normal printing

#-*-Coding:utf-8-*-__author__ = "MuT6 sch01ar" Import logginglogging.debug (' the Debug ') Logging.info (' the info ') Logging.warning (' Request outtime ') logging.error (' The Python Run Error ') logging.critical (' The server Down ')

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Only the warning level and subsequent statements are printed in 5 levels

Write log file

#-*-Coding:utf-8-*-__author__ = "MuT6 sch01ar" Import logginglogging.basicconfig (filename= ' Log_test.log ', level= Logging.info) logging.debug (' This Python is running ') logging.info (' The infomation of Python ') logging.warning (' Request Outtime ') logging.error (' The Python Run Error ') logging.critical (' The server Down ')

Level=loggin.info, the log level is set to info, only logs with info or higher than info will be written to the log file.

Write the contents of the log file

Write content only from info level, debug level is lower than info, no write

Log formatting

% (name) s the name of the log writer

#-*-Coding:utf-8-*-__author__ = "MuT6 sch01ar" Import logginglogging.basicconfig (format= '% (name) s ', level=logging. INFO) logging.debug (' This Python is running ') logging.info (' The infomation of Python ') logging.warning (' Request outtime ') ) Logging.error (' The Python Run Error ') logging.critical (' The server Down ')

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% (Levelno) s log level in digital form,% (levelname) s in text form

#-*-Coding:utf-8-*-__author__ = "MuT6 sch01ar" Import logginglogging.basicconfig (format= '% (levelno) s,% (levelname) s ' , Level=logging.info) logging.debug (' This Python is running ') logging.info (' The infomation of Python ') logging.warning (' Request outtime ') logging.error (' The Python Run Error ') logging.critical (' The server Down ')

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% (Lineno) d The line of code where the statement of the log output function is called

#-*-Coding:utf-8-*-__author__ = "MuT6 sch01ar" Import logginglogging.basicconfig (format= '% (Lineno) d ', level=logging. INFO) logging.debug (' This Python is running ') logging.info (' The infomation of Python ') logging.warning (' Request outtime ') ) Logging.error (' The Python Run Error ') logging.critical (' The server Down ')

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% (pathname) s the full path name of the module that invokes the log output function

#-*-Coding:utf-8-*-__author__ = "MuT6 sch01ar" Import logginglogging.basicconfig (format= '% (pathname) s ', level= Logging.info) logging.debug (' This Python is running ') logging.info (' The infomation of Python ') logging.warning (' Request Outtime ') logging.error (' The Python Run Error ') logging.critical (' The server Down ')

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% (filename) s The file name of the module that called the log output function

#-*-Coding:utf-8-*-__author__ = "MuT6 sch01ar" Import logginglogging.basicconfig (format= '% (filename) s ', level= Logging.info) logging.debug (' This Python is running ') logging.info (' The infomation of Python ') logging.warning (' Request Outtime ') logging.error (' The Python Run Error ') logging.critical (' The server Down ')

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% (module) s call the module name of the log output function

#-*-Coding:utf-8-*-__author__ = "MuT6 sch01ar" Import logginglogging.basicconfig (format= '% (module) s ', level=logging. INFO) logging.debug (' This Python is running ') logging.info (' The infomation of Python ') logging.warning (' Request outtime ') ) Logging.error (' The Python Run Error ') logging.critical (' The server Down ')

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is the file name, no suffix

% (FuncName) s Call the function name of the log output function

#-*-Coding:utf-8-*-__author__ = "MuT6 sch01ar" Import logginglogging.basicconfig (format= '% (funcName) s ', level= Logging.info) def log_test ():    logging.debug (' This Python is running ')    logging.info (' The infomation of Python ')    logging.warning (' Request outtime ')    logging.error (' The Python Run error ')    logging.critical (' the server Down ') log_test ()

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% (created) F current time, represented by the UNIX standard floating-point number representing the time

#-*-Coding:utf-8-*-__author__ = "MuT6 sch01ar" Import logginglogging.basicconfig (format= '% (created) f ', level=logging . INFO) Logging.debug (' This Python is running ') logging.info (' The infomation of Python ') logging.warning (' Request outtime ') logging.error (' The Python Run Error ') logging.critical (' The server Down ')

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% (relativecreated) d output log information number of milliseconds since it was created

#-*-Coding:utf-8-*-__author__ = "MuT6 sch01ar" import loggingimport timelogging.basicconfig (format= '% ( relativecreated) d ', Level=logging.info) logging.debug (' This Python is running ') Time.sleep (2) logging.info (' The Infomation of Python ') logging.warning (' Request outtime ') logging.error (' The Python Run Error ') logging.critical (' The Server Down ')

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The result is uncertain.

% (asctime) s string as the current time, the default format is "2018-02-15 17:59:31,546", after the comma is the millisecond

#-*-Coding:utf-8-*-__author__ = "MuT6 sch01ar" Import logginglogging.basicconfig (format= '% (asctime) s ', level=logging . INFO) Logging.debug (' This Python is running ') logging.info (' The infomation of Python ') logging.warning (' Request outtime ') logging.error (' The Python Run Error ') logging.critical (' The server Down ')

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% (thread) d current thread number,% (threadname) s current thread name

#-*-Coding:utf-8-*-__author__ = "MuT6 sch01ar" Import logginglogging.basicconfig (format= '% (thread) d,% (threadname) s ' , Level=logging.info) logging.debug (' This Python is running ') logging.info (' The infomation of Python ') logging.warning (' Request outtime ') logging.error (' The Python Run Error ') logging.critical (' The server Down ')

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% (process) d process number

#-*-Coding:utf-8-*-__author__ = "MuT6 sch01ar" Import logginglogging.basicconfig (format= '% (process) d ', level=logging . INFO) Logging.debug (' This Python is running ') logging.info (' The infomation of Python ') logging.warning (' Request outtime ') logging.error (' The Python Run Error ') logging.critical (' The server Down ')

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% (message) s user-output message

#-*-Coding:utf-8-*-__author__ = "MuT6 sch01ar" Import logginglogging.basicconfig (format= '% (message) s ', level=logging . INFO) Logging.debug (' This Python is running ') logging.info (' The infomation of Python ') logging.warning (' Request outtime ') logging.error (' The Python Run Error ') logging.critical (' The server Down ')

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Formatted log writes

#-*-Coding:utf-8-*-__author__ = "MuT6 sch01ar" Import logginglogging.basicconfig (filename= ' Log_test.log ', level= logging.info,format= '% (message) s ', datefmt= '%m ') logging.debug (' This Python is running ') logging.info (' The infomation of Python ') logging.warning (' Request outtime ') logging.error (' The Python Run Error ') logging.critical (' The server Down ')

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Python module-logging module (i)