python logging levels

Log writing is a common function of our daily work, we can directly use the way to write files in their own way to write the log, in addition, when we in a relatively large project, involving log writing, the general will use the logging module to write the log, the first step, first write a singleton, Create a Logger object:Def _instance (): Global Logger If logger is None: logging.config.fileConfig (Os.path.join (util.get_ Current (), "

Background In a new project to join the log function, want to write a, but a chance, through Google found Python built a very powerful log module: logging. A cursory study, here are some of my notes. Why use Logs Trace some of the operation information of the program, in order to achieve the time to understand the status of the program, quickly capture program anomalies, timely detection of the purpose of

. Installing Mysql-python0. Get http://softlayer-ams.dl.sourceforge.net/project/mysql-python/mysql-python-test/1.2.4b4/ Mysql-python-1.2.4b4.tar.gz1. Tar zxvf mysql-python-1.2.4b4.tar.gz2. CD mysql-python-1.2.4b4.tar.gz; Python se

warning message Parameters of the Logging.basicconfig function:FileName: Specify the log file nameFileMode: Same as file function, specify open mode of log file, ' W ' or ' a 'Format: Specifies the formats and contents of the output, format can output a lot of useful information, as in the example above:% (Levelno) S: Print the value of the log level% (levelname) S: Print log level name% (pathname) s: Prints the path of the currently executing program, which is actually sys.argv[0]% (fi

Logging Module As the name implies, for the program log output, you can set the log level, format, output mode, etc., the basic use method is as follows:1, Logging.basicconfig Way simple configuration, can only choose to output to the screen alone or output to a file, cannot be output at the same time. For example: #-*-coding:utf-8-*-#只能选择输出到屏幕或文件import logginglogging.basicconfig (level=logging. debug, fo

) d: Print process ID% (message) s: Print log informationDATEFMT: Specify time format, same as Time.strftime ()Level: Sets the log levels by default to logging. WARNINGStream: Specifies the output stream that will log, can specify output to Sys.stderr,sys.stdout or file, default output to Sys.stderr, stream is ignored when stream and filename are specified simultaneouslyThree, the log output to the file and

Python implements the ability to write logs to logging. The logging module is still very useful.1 #!/usr/bin/env python2 #-*-coding:utf-8-*-3 4 #@Time: 2018/4/25 17:055 #@Author: Zms6 #@Site:7 #@File: log.py8 #@Software: pycharm Community Edition9 Ten Import Time One ImportLogging A ImportOS - fromLogging.handlersImportRotatingfilehandler - theProject_dir = Os.

.addhandler (FH) logger4.addhandler (CH) logger5.addhandler (FH) Logger5.addhandler (CH) # Record a log Logger.debu G ('Logger Debug Message') Logger.info ('Logger Info Message') logger.warning ('Logger warning message') Logger.error ('Logger error message') logger.critical ('Logger Critical Message') Logger1.debug ('logger1 Debug Message') Logger1.info ('logger1 Info Message') logger1.warning ('logger1 warning Message') Logger1.error ('logger1 Error message') logger1.critical ('logger1 Critical

ImportLogginglogging.basicconfig ( level=logging. DEBUG, Format='% (asctime) s% (filename) s[line:% (lineno) d]% (levelname) s% (message) s', Datefmt='%a,%d%b%Y%h:%m:%s', filename='/tmp/test.log', FileMode='W') Logging.debug ('Debug Message') Logging.info ('Info Message') logging.warning ('warning Message') Logging.error ('error Message') logging.critical ('Critical Message') ImportLogging#Set Root LoggerR =logging.getlogger () ch=

The two methods output by using the python logging module in stdout are described in detail. Use the logging module of python to output data in stdout Preface: When using the python logging module, in addition to

recently when doing automated testing, want to add a log to him, so use the logging module, the following is the Python add log several waysFirst, the Python code configuration (of course, there is a multi-module common Python code settings, this online there are many examples, it is not here to repeat)Import loggingIm

the Logging.basicconfig function:filename: Specify the log file nameFileMode: Same as file function, specify open mode of log file, ' W ' or ' a 'Format : Specifies the formats and contents of the output, format can output a lot of useful information, as in the example above:% (Levelno) S: Print the value of the log level% (levelname) S: Print log level name% (pathname) s: Prints the path of the currently executing program, which is actually sys.argv[0]% (filename) s: Prints the current name of

Label:Debug The first method is simple and straightforward, which is to print print out the variables that might be problematic: >>> def foo (s): n= Int (s) print ' >>> n =%d '% n return 10/n >>> def main (): C6/>foo (' 0 ') >>> main () >>> n = 0 Traceback (most recent call last): File " 　　 Assertion Where print is used to assist in viewing, you can replace it with an assertion (assert): >>> def foo (s): N=int (s) assertn!=0, ' n is zero ' return10/n >>> def main (): foo (' 0 ') >>

The Python standard log module uses Handler control log messages to write to different destinations, such as files, streams, messages, sockets, and so on. In addition to the Streamhandler, Filehandler, and Nullhandler definitions in the logging module, the other Handler are defined in the Logging.hangdlers module. These Handler are: Watchedfilehandler, Rotatingfilehandler, Timedrotatingfilehandler, Socketha

: Specify the time format, same as Time.strftime () level: Set the logging level, which defaults to logging. Warningstream: Specifies the output stream that will log, can specify output to Sys.stderr,sys.stdout or file, default output to Sys.stderr, stream is ignored when stream and filename are specified simultaneouslyNote : The log is set by using the Basicconfig () method, and the default way that the lo

=[log_entry])transport.close()if result == scribe.ResultCode.OK: sys.exit()elif result == scribe.ResultCode.TRY_LATER:print >> sys.stderr, "TRY_LATER" sys.exit(84) # 'T'else: sys.exit("Unknown error code.") The usage is as follows: $echo "hello world" | ./scribe_cat [-h host[:port]] category To make it easier for the program to use the scribe log aggregation architecture, I integrate scribe log processing into Python

Use Python logging to record log information such as DebugDebug above information written to fileInfo above info output in consoleImport Osimport loggingvde_logging_name = "vde_logging" Log_file_path = Os.path.join (Os.path.dirname (__file__), "Vde_ Regression.log ") def logger_initialization (): # 1. Logging logger = Logging.getlogger (vde_logging_name) logger.s

number 8 o'clock exits the programSys.exit ()Import Syscount = 1while count Output Result:12345678View Code(3) Sys.version methodDefinition: Get version information for the Pyhon interpreter(4) Sys.maxint methodDefinition: the largest int value(5) Sys.path methodDefinition: Returns the search path of the module, initializing the value using the PYTHONPATH environment variableExample 1:Import Sysprint (Sys.path) # Get the search path for the moduleOutput Result:['C:\\users\\william\\pycharmproje

One, logging moduleIdle to have no matter, think logging module compare have empty, probably tidy up a bitSecond, the composition of the logging moduleLogging module, go inside you will see three packages: Init file, Config,handlerHandler is to deal with some of the content of handler, if you want to make some changes handler can look at this part:Rotatinghandler

Describe:Many programs have logging requirements, and the information contained in the log is a normal program access log, there may be errors, warnings and other information output, Python's logging module provides a standard log interface, you can use it to store various formats of the log.The logging log can be divided into 5