Python's logging log module

Logging

A module for easy logging tangent thread security

Vim log_test.py

Import logginglogging.basicconfig (filename= ' Log.log ',                    format= '% (asctime) s-% (name) s-% (LevelName) s-% (module) s :  % (message) s ',                    datefmt= '%y-%m-%d%h:%m:%s%p ',                    level=logging. Debug) logging.debug (' Debug ') logging.info (' info ') logging.warning (' Warning ') logging.error (' ERROR ') Logging.critical (' critical ') logging.log (' log ')

Run the build log file Log.log

Simulate a script that generates an error log

Import logginglogging.basicconfig (filename= ' Log.log ',                    format= '% (asctime) s-% (name) s-% (LevelName) s-% (module) s :  % (message) s ',                    datefmt= '%y-%m-%d%h:%m:%s%p ',                    level=logging. DEBUG) while True:    option = raw_input ("Input a digit:")    if Option.isdigit ():        print "hehe", option        Logging.info (' option correct ')    else:        logging.error (' must input a digit! ')

Executes if the input is a number, write the info log if it is not written as the error log

Ps:level=logging. DEBUG is representative of the minimum record basic if you change to warning you will not record info,debug information even if it is set

It's written in a file.

Display the log to the screen with output to a file

Import Logginglogger = Logging.getlogger ("Simple_example") logger.setlevel (logging. DEBUG) #on Screench = logging. Streamhandler () Ch.setlevel (logging. WARNING) #into Filefh = logging. Filehandler ("Log2.log") fh.setlevel (logging. DEBUG) formatter = logging. Formatter ("% (asctime) s-% (name) s-% (LevelName) s-% (module) s:  % (message) S") Ch.setformatter (Formatter) Fh.setformatter (Formatter) logger.addhandler (CH) logger.addhandler (FH) logger.debug ("Debug msg ...") Logger.info ("Info msg ...") Logger.warn ("Warn msg ...") Logger.error ("Error msg ...") Logger.critical ("Critical msg ...")

The screen does not output debug information

Python's logging log module