A frequently used Python logging encapsulation that supports simultaneous output to the console and files

For ease of debugging, the python logging module is encapsulated to support simultaneous output to the console and file, and log file rollback.
(1) myloggingconfig. py

View code

 #  -*-Coding: UTF-8 -*-  
 
 '''  
Created on 2011-8-24
Main purpose:
PairProgramGeneral configuration of the loggong mode used in
@ Author: jerrykwan

  ''' 

 Import Logging

 Import Logging. handlers

Import OS

Levels = { '  Noset  ' : Logging. notset,
 '  Debug  ' : Logging. debug,
 '  Info  ' : Logging. info,
 '  Warning  ' : Logging. Warning,
'  Error  ' : Logging. error,
 '  Critical  ' : Logging. Critical}

 #  Set up logging to file  
 
 #  Logging. basicconfig (Level = logging. notset,  
#  Format = "% (asctime) S % (name)-12 S % (levelname)-8 S % (Message) S" 
#  )  
 
 #  # Filename = "./log.txt ",  
 
 #  # Filemode = "W ")  
 
 #  Create logs file folder  
 Logs_dir = OS. Path. Join (OS. Path. curdir, "  Logs " )
 If OS. Path. exists (logs_dir) And OS. Path. isdir (logs_dir ):
 Pass 
 Else :
OS. mkdir (logs_dir)

 #  Define a rotating file Handler  
 Rotatingfilehandler = logging. Handlers. rotatingfilehandler (filename = "  ./Logs/log.txt  " ,

Maxbytes = 1024*1024*50,

Backupcount = 5)

Formatter = logging. formatter ( "  % (Asctime) S % (name)-12 S % (levelname)-8 S % (Message) S  " )

Rotatingfilehandler. setformatter (formatter)

Logging. getlogger ( "" ). Addhandler (rotatingfilehandler)

 # Define a handler whitch writes messages to sys  
 
Console = logging. streamhandler ()

Console. setlevel (logging. notset)

 #  Set a format which is simple for console use  
 
Formatter = logging. formatter ( "  % (Name)-12 s: % (levelname)-8 S % (Message) S  " )

 #  Tell the handler to use this format 
 
Console. setformatter (formatter)

 #  Add the handler to the root Logger  
 
Logging. getlogger ( "" ). Addhandler (console)

 #  Set initial Log Level  
 Logger = logging. getlogger ( "" )
Logger. setlevel (logging. notset)

(2) Usage

ImportLogging
Logger = logging. getlogger (_ Name __)


If _ Name __="_ Main __":
ImportMyloggingconfig
MSG = "ThisIsJust a test"
Logger.info (MSG)
 

To dynamically change the logging level, you can use logging. getlogger (""). setlevel (level) to change it.