python自定义日志log类，记录不同级别的错误信息和行号，pythonlog,class CheloE

python自定义日志log类，记录不同级别的错误信息和行号，pythonlog,class CheloE

class CheloExtendedLogger(logging.Logger):    """    Custom logger class with additional levels and methods    """    WARNPFX = logging.WARNING+1    def __init__(self, name):        logging.Logger.__init__(self, name, logging.DEBUG)                        logging.addLevelName(self.WARNPFX, 'WARNING')        console = logging.StreamHandler()        console.setLevel(logging.DEBUG)        # create formatter and add it to the handlers        formatter = logging.Formatter("%(asctime)s [%(funcName)s: %(filename)s,%(lineno)d] %(message)s")        console.setFormatter(formatter)        # add the handlers to logger        self.addHandler(console)        return    def warnpfx(self, msg, *args, **kw):        self.log(self.WARNPFX, "! PFXWRN %s" % msg, *args, **kw)logging.setLoggerClass(CheloExtendedLogger)    rrclogger = logging.getLogger("rrcheck")rrclogger.setLevel(logging.INFO)def test():    rrclogger.debug("DEBUG message")    rrclogger.info("INFO message")    rrclogger.warnpfx("warning with prefix")test()

                                输出格式如下：

2011-02-10 14:36:51,482 [test: log4.py,35] INFO message2011-02-10 14:36:51,497 [warnpfx: log4.py,26] ! PFXWRN warning with prefix