Question

我想做一些我认为很简单的事情。

实际上使用python日志记录模块，我感兴趣的是日志记录命令行中命令行的所有内容行参数，并记录到固定的DEBUG级别。

创建具有不同级别的两个不同记录器不起作用，但是设置两个不同处理程序的级别都添加到根目录记录器也不起作用，所以任何关于我应该如何实现它的想法？（在其他链接上阅读第二种方法应该有效，所以我做了别的蠢事吗？）

这是设置我的日志记录系统的代码：

class LoggerSetup(object):
    """Setup the different logger objects
    """

    def __init__(self):
        self.root_logger = logging.getLogger()
        self.shell_hdlr = logging.StreamHandler()

    #TODO: add another logging handler which stores to a temporary file
    #which should be cleaned up later
    def setup_shell_logger(self, log_level):
        self.root_logger.setLevel(LOG_LEVELS[log_level])
        # in this way the root logger is not set but the handlers are set
        self.shell_hdlr = logging.StreamHandler()
        self.shell_hdlr.setLevel(LOG_LEVELS[log_level])
        self.shell_hdlr.setFormatter(StarFormatter())
        #FIXME: add the support for regular expression exclusion too
        self.root_logger.addHandler(self.shell_hdlr)

    def setup_log_include(self, log_include):
        """Set up the filter to include log messages
        """
        if log_include:
            incl = FilterInclude(log_include)
            self.shell_hdlr.addFilter(incl)

    def setup_log_exclude(self, log_exclude):
        """Set up the filters to exclude log messages
        """
        if log_exclude:
            excl = FilterExclude(log_exclude)
            self.shell_hdlr.addFilter(excl)

    def setup_file_logging(self):
        """Set up the file logger, which always logs in DEBUG mode
        even if the top level logger is set to another level
        """
        #XXX: not working, one possible way to make it work is to create
        #only one log, and different handler/filters to make to handle all
        #the different outputs
        file_handler = logging.FileHandler(LOG_FILENAME)
        # the file logging is always in debug mode
        file_handler.setLevel(logging.DEBUG)
        formatter = logging.Formatter('%(name)-12s: %(levelname)-8s %(message)s - %(asctime)s')
        file_handler.setFormatter(formatter)
        self.root_logger.addHandler(file_handler)

Answer 1

我正在使用我的所有Python命令行应用程序。它有点冗长，但您应该能够获得一个接受可选参数的记录器，以便在任何级别创建控制台记录器，而不管记录到文件的内容是什么：

#!/usr/bin/env python
import logging
from argparse import ArgumentParser

COMPANY_LOGGER = 'COMPANY.Python.Logger'
CONSL_LEVEL_RANGE = range(0, 51)
LOG_FILE = 'company.log'
FORMAT_STR = '%(asctime)s %(levelname)s %(message)s'

parser = ArgumentParser()
parser.add_argument('-c', '--console-log', metavar='ARG',
                    type=int, choices=range(0, 51),
                    action='store', dest='console_log',
                    default=None,
                    help='Adds a console logger for the level specified in the range 1..50')

args = parser.parse_args()

# Create logger
logger = logging.getLogger(COMPANY_LOGGER)
logger.setLevel(logging.DEBUG)
formatter = logging.Formatter(FORMAT_STR)

# Add FileHandler and only log WARNING and higher
fh = logging.FileHandler(LOG_FILE)
fh.name = 'File Logger'
fh.level = logging.WARNING
fh.formatter = formatter
logger.addHandler(fh)

# Add optional ConsoleHandler
if args.console_log:
    ch = logging.StreamHandler()
    ch.name = 'Console Logger'
    ch.level = args.console_log
    ch.formatter = formatter
    logger.addHandler(ch)

logger.debug('DEBUG')
logger.info('INFO')
logger.warning('WARNING')
logger.critical('CRITICAL')

从命令行运行时，我们可以看到记录级别的差异。

-c1等同于“DEBUG and higher”（最详细），但company.log仍然只记录警告及更高版本：

~ zacharyyoung$ ./so.py -c1
2012-01-12 08:59:50,086 DEBUG DEBUG
2012-01-12 08:59:50,086 INFO INFO
2012-01-12 08:59:50,087 WARNING WARNING
2012-01-12 08:59:50,087 CRITICAL CRITICAL

~ zacharyyoung$ cat company.log 
2012-01-12 08:59:50,087 WARNING WARNING
2012-01-12 08:59:50,087 CRITICAL CRITICAL

-c20等同于INFO：

~ zacharyyoung$ ./so.py -c20
2012-01-12 09:00:09,393 INFO INFO
2012-01-12 09:00:09,393 WARNING WARNING
2012-01-12 09:00:09,393 CRITICAL CRITICAL

~ zacharyyoung$ cat company.log 
2012-01-12 08:59:50,087 WARNING WARNING
2012-01-12 08:59:50,087 CRITICAL CRITICAL
2012-01-12 09:00:09,393 WARNING WARNING
2012-01-12 09:00:09,393 CRITICAL CRITICAL

python中不同级别的日志记录

1 个答案: