python logging debug

. Timedrotatingfilehandler (' Web.log ', when= ' s ', interval=3,backupcount=5) Logger.addhandler (File_handler) file_ Formatter = logging. Formatter ('% (name) s-% (asctime) s-% (levelno) s-% (message) s ') File_handler.setformatter (file_formatter) logger.debug (' The Debug ') logger.info (' the info ') logger.warning (' The Warning ') logger.error (' the error ') logger.critical (' The Critical ')Generat

This article mainly introduces the usage examples of the logging module in Python, and introduces the usage of the logging module in the form of instances, which has some practical value, for more information about how to use the logging module, see the examples in this article. The specific method is as follows:

Python logging module is mainly Python provided by the general log system, the use of the method is actually very simple, this piece is not much introduction. The following is mainly about the use of the Python logging module, involving multiple

Many programs have logging requirements, and the log contains information that has normal program access logs, there may be errors, warnings and other information output, Python's logging module provides a standard log interface, you can store various formats of the log, logging log can be divided into debug(),,, info(

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

#coding: Utf-8import loggingclass Testlog (object): ' Logging ' def __init__ after encapsulation (self, logger = None): ' "Specifies the file path to save the log, the log level, and the call file to deposit the log into the specified file ' # ' creates a logger Self.logger = logging. GetLogger (Logger) self.logger.setLevel (logging.

and 97-122 returns 26 lowercase letters. Instead, Ord (' a ') returns the corresponding number of the letter A in ASCII"""7temp = Chr (Random.randint (65,90))8 Else:9temp = Random.randint (0,9)TenCheckcode + =Str (temp) One Print(Checkcode)Logging Module (supplemental)There are 6 levels of logs, from high to low as follows:CRITICAL = 50FATAL = CRITICALERROR = 40WARNING = 30WARN = WARNINGINFO = 20DEBUG = 10NOTSET = 01, by default, Longging will on

='Myapp.log',7Filemode='W')8 9 #################################################################################################Ten #define a Streamhandler, print info-level or higher log information to a standard error, and add it to the current log processing object # Oneconsole =logging. Streamhandler () A console.setlevel (logging.info) -Formatter = logging. Formatter ('% (name) -12s:% (levelname) -8s%

One (simple application)Import Logging logging.debug (' Debug message ') logging.info (' info message ') logging.warning (' Warning Message ') logging.error (' error message ') logging.critical (' critical message ') Output:WARNING:root:warning messageERROR:root:error messageCRITICAL:root:critical messageVisible, by default, Python's logging module prints t

Python Logging ModuleIn view of the complexity of recent projects, the simple print debugging method has been unable to meet the growing bug, so bloggers turned to logging.First, basic usageCan be used directly as print# coding=utf-8import logginglogging.debug("debug message")logging.info("info message")logging.warning("warning message")logging.error("error messa

First, starting from a usage scenarioDevelop a log system that outputs logs to the console and to log filesPython code Import logging # Create a Logger Logger = Logging.getlogger (' MyLogger ') Logger.setlevel (logging. DEBUG) # Create a handler to write to the log file FH = logging. Filehandler ('

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

file, then modify the Syslog.confauth.err/var/log/python.err See program: Syslog . Openlog ("test.py", syslog. Log_pid,syslog. Log_auth) Syslog.syslog (Syslog. Log_err, "Add error information to python.err file")Second, logging1. Simply print the log to the screen importlogginglogging.debug(‘This is debug message‘)logging.info(‘This is info message‘)logging.warning(‘This is warning message‘)屏幕上打印:WARNING:root:This is warning message

=[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

Logging.basicconfig configuration logging to file A, and then using Logging.filehandler to generate records to file B loggerWhen using this logger log, both files A and B are logged simultaneously, and it feels like the mechanism is quite unexpected.#-*-Coding:utf8-*-import logginglogging.basicconfig ( level=logging. DEBUG, format= ' [% (asctime) s

located % (created) f Current time, represented by the UNIX standard floating-point number representing the time % (relativecreated) d The number of milliseconds since logger was created when the log information is output % (Asctime) s The current time in string form. The default format is "2003-07-08 16:49:45,896". The comma is followed by milliseconds % (thread) d

Python comes with a log processing module loggingThe default log level is debug,info,warning,error,critical, the corresponding function is debug (), INFO (), WARNING (), ERROR (), and CRITICAL ()In [490]: Import Loggingin [491]: log_filename= '/tmp/example.log ' in [492]: Logging.basicconfig (Filename=log_filename, Level=logg