¿Usando la clase logging python para escribir en un archivo?
¿Cómo puedo usar la clase logging en python para escribir en un archivo? Cada vez que intento usarlo, imprime el mensaje.
6 answers
Un ejemplo de usar logging.basicConfig
en lugar de logging.fileHandler()
logging.basicConfig(filename=logname,
filemode='a',
format='%(asctime)s,%(msecs)d %(name)s %(levelname)s %(message)s',
datefmt='%H:%M:%S',
level=logging.DEBUG)
logging.info("Running Urban Planning")
self.logger = logging.getLogger('urbanGUI')
En orden, las cinco partes hacen lo siguiente:
- establecer el archivo de salida(
filename=logname
) - establézcalo para anexar en lugar de sobrescribir (
filemode='a'
) - determinar el formato del mensaje de salida (
format=...
) - determinar el formato del tiempo de salida(
datefmt='%H:%M:%S'
) - y determinar el nivel mínimo de mensaje que aceptará (
level=logging.DEBUG
).
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2017-02-02 19:22:14
Tomado del " libro de cocina de registro":
# create logger with 'spam_application'
logger = logging.getLogger('spam_application')
logger.setLevel(logging.DEBUG)
# create file handler which logs even debug messages
fh = logging.FileHandler('spam.log')
fh.setLevel(logging.DEBUG)
logger.addHandler(fh)
Y ya está listo.
P.d. Asegúrese de leer el logging HOWTO también.
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2017-12-13 18:49:55
Http://docs.python.org/library/logging.html#logging.basicConfig
logging.basicConfig(filename='/path/to/your/log', level=....)
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2011-06-17 13:48:41
Prefiero usar un archivo de configuración. Me permite cambiar los niveles de registro, ubicaciones, etc. sin cambiar el código cuando voy de desarrollo a lanzamiento. Simplemente empaqueto un archivo de configuración diferente con el mismo nombre y con los mismos registradores definidos.
import logging.config
if __name__ == '__main__':
# Configure the logger
# loggerConfigFileName: The name and path of your configuration file
logging.config.fileConfig(path.normpath(loggerConfigFileName))
# Create the logger
# Admin_Client: The name of a logger defined in the config file
mylogger = logging.getLogger('Admin_Client')
msg='Bite Me'
myLogger.debug(msg)
myLogger.info(msg)
myLogger.warn(msg)
myLogger.error(msg)
myLogger.critical(msg)
# Shut down the logger
logging.shutdown()
Aquí está mi código para el archivo de configuración de registro
#These are the loggers that are available from the code
#Each logger requires a handler, but can have more than one
[loggers]
keys=root,Admin_Client
#Each handler requires a single formatter
[handlers]
keys=fileHandler, consoleHandler
[formatters]
keys=logFormatter, consoleFormatter
[logger_root]
level=DEBUG
handlers=fileHandler
[logger_Admin_Client]
level=DEBUG
handlers=fileHandler, consoleHandler
qualname=Admin_Client
#propagate=0 Does not pass messages to ancestor loggers(root)
propagate=0
# Do not use a console logger when running scripts from a bat file without a console
# because it hangs!
[handler_consoleHandler]
class=StreamHandler
level=DEBUG
formatter=consoleFormatter
args=(sys.stdout,)# The comma is correct, because the parser is looking for args
[handler_fileHandler]
class=FileHandler
level=DEBUG
formatter=logFormatter
# This causes a new file to be created for each script
# Change time.strftime("%Y%m%d%H%M%S") to time.strftime("%Y%m%d")
# And only one log per day will be created. All messages will be amended to it.
args=("D:\\Logs\\PyLogs\\" + time.strftime("%Y%m%d%H%M%S")+'.log', 'a')
[formatter_logFormatter]
#name is the name of the logger root or Admin_Client
#levelname is the log message level debug, warn, ect
#lineno is the line number from where the call to log is made
#04d is simple formatting to ensure there are four numeric places with leading zeros
#4s would work as well, but would simply pad the string with leading spaces, right justify
#-4s would work as well, but would simply pad the string with trailing spaces, left justify
#filename is the file name from where the call to log is made
#funcName is the method name from where the call to log is made
#format=%(asctime)s | %(lineno)d | %(message)s
#format=%(asctime)s | %(name)s | %(levelname)s | %(message)s
#format=%(asctime)s | %(name)s | %(module)s-%(lineno) | %(levelname)s | %(message)s
#format=%(asctime)s | %(name)s | %(module)s-%(lineno)04d | %(levelname)s | %(message)s
#format=%(asctime)s | %(name)s | %(module)s-%(lineno)4s | %(levelname)-8s | %(message)s
format=%(asctime)s | %(levelname)-8s | %(lineno)04d | %(message)s
#Use a separate formatter for the console if you want
[formatter_consoleFormatter]
format=%(asctime)s | %(levelname)-8s | %(filename)s-%(funcName)s-%(lineno)04d | %(message)s
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2015-06-10 09:52:25
Http://docs.python.org/library/logging.handlers.html#filehandler
La clase
FileHandler
, ubicada en el paquete corelogging
, envía la salida de registro a un archivo de disco.
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2011-06-17 13:45:32
import sys
import logging
from util import reducer_logfile
logging.basicConfig(filename=reducer_logfile, format='%(message)s',
level=logging.INFO, filemode='w')
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2016-09-05 09:04:30