链接：

具体的使用方法，请参考如下代码：

import loggingimport auxiliary_module# create logger with 'spam_application'logger = logging.getLogger('spam_application')logger.setLevel(logging.DEBUG)# create file handler which logs even debug messagesfh = logging.FileHandler('spam.log')fh.setLevel(logging.DEBUG)# create console handler with a higher log levelch = logging.StreamHandler()ch.setLevel(logging.ERROR)# create formatter and add it to the handlersformatter = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s')fh.setFormatter(formatter)ch.setFormatter(formatter)# add the handlers to the loggerlogger.addHandler(fh)logger.addHandler(ch)logger.info('creating an instance of auxiliary_module.Auxiliary')a = auxiliary_module.Auxiliary()logger.info('created an instance of auxiliary_module.Auxiliary')logger.info('calling auxiliary_module.Auxiliary.do_something')a.do_something()logger.info('finished auxiliary_module.Auxiliary.do_something')logger.info('calling auxiliary_module.some_function()')auxiliary_module.some_function()logger.info('done with auxiliary_module.some_function()')

Here is the auxiliary module:

import logging# create loggermodule_logger = logging.getLogger('spam_application.auxiliary')class Auxiliary:    def __init__(self):        self.logger = logging.getLogger('spam_application.auxiliary.Auxiliary')        self.logger.info('creating an instance of Auxiliary')    def do_something(self):        self.logger.info('doing something')        a = 1 + 1        self.logger.info('done doing something')def some_function():    module_logger.info('received a call to "some_function"')

The output looks like this:

2005-03-23 23:47:11,663 - spam_application - INFO -   creating an instance of auxiliary_module.Auxiliary2005-03-23 23:47:11,665 - spam_application.auxiliary.Auxiliary - INFO -   creating an instance of Auxiliary2005-03-23 23:47:11,665 - spam_application - INFO -   created an instance of auxiliary_module.Auxiliary2005-03-23 23:47:11,668 - spam_application - INFO -   calling auxiliary_module.Auxiliary.do_something2005-03-23 23:47:11,668 - spam_application.auxiliary.Auxiliary - INFO -   doing something2005-03-23 23:47:11,669 - spam_application.auxiliary.Auxiliary - INFO -   done doing something2005-03-23 23:47:11,670 - spam_application - INFO -   finished auxiliary_module.Auxiliary.do_something2005-03-23 23:47:11,671 - spam_application - INFO -   calling auxiliary_module.some_function()2005-03-23 23:47:11,672 - spam_application.auxiliary - INFO -   received a call to 'some_function'2005-03-23 23:47:11,673 - spam_application - INFO -   done with auxiliary_module.some_function()