twisted的log系统的级别level

首先你需要写一个log观察者类，然后给这观察者一个级别来过滤你想要的log import logging from twisted.python import log

class LevelFileLogObserver(log.FileLogObserver):

def __init__(self, f, level=logging.INFO):
    log.FileLogObserver.__init__(self, f)
    self.logLevel = level

def emit(self, eventDict):
    if eventDict['isError']:
        level = logging.ERROR
    elif 'level' in eventDict:
        level = eventDict['level']
    else:
        level = logging.INFO
    if level >= self.logLevel:
        log.FileLogObserver.emit(self, eventDict)

'''then you have to register it:''' from twisted.python import logfile

f = logfile.LogFile("someFile.log", '/some/path/', rotateLength=1000,maxRotatedFiles=100) logger = LevelFileLogObserver(f, logging.DEBUG) twisted.python.log.addObserver(logger.emit)

If you use twistd you can pass it through --logger option:

mylogger.py

import LevelFileLogObserver

from twisted.python import logfile

f = logfile.LogFile("someFile.log", '/some/path/', rotateLength=1000, maxRotatedFiles=100) flobserver = LevelFileLogObserver(f) observer = flobserver.emit

twistd invocation

twistd --logger=mylogger.observer Now you can use the new api you defined:

log.msg('the level of this message is INFO') log.msg('the level of this message is INFO', level=logging.INFO) log.msg('the level of this message is DEBUG', level=logging.DEBUG) log.msg('the level of this message is ERROR', level=logging.ERROR) log.msg('the level of this message is ERROR', level=logging.WARNING) log.msg('the level of this message is ERROR', level=logging.CRITICAL) log.err('the level of this message is ERROR')

级别共有五个，优先级关系是 '''level: DEBUG < INFO < WARNING < ERROR < CRITICAL'''，如果级别为CRITICAL 那么小于它的级别的错误都不会打印出来

来源：oschina

链接：https://my.oschina.net/u/1032854/blog/194755