Python logging 示例

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Python logging 示例

示例

demo1

#!/usr/bin/env python
# -*- coding: utf-8 -*-

import logging
import sys

## start log
# create logger
log_level = logging.DEBUG
formatter = logging.Formatter(
    fmt="%(asctime)-15s %(levelname)s %(process)d %(filename)s %(lineno)d: %(message)s",
    datefmt="%a %d %b %Y %H:%M:%S")

logger = logging.getLogger(name="test")
logger.setLevel(log_level)

fh = logging.FileHandler(filename="test.log")
fh.setLevel(log_level)
fh.setFormatter(formatter)
logger.addHandler(fh)

oh = logging.StreamHandler(sys.stdout)
oh.setLevel(log_level)
oh.setFormatter(formatter)
logger.addHandler(oh)
## end log

logger.debug("debug")
logger.info("info")
logger.info("info")

demo2

#!/usr/bin/env python
# -*- coding: utf-8 -*-

import logging
import logging.handlers
import datetime

logger = logging.getLogger(__name__)
logger.setLevel(logging.DEBUG)

rfh = logging.handlers.TimedRotatingFileHandler(
    'all.log', when='midnight', interval=1, backupCount=7, atTime=datetime.time(0, 0, 0, 0))
rfh.setFormatter(
    logging.Formatter("%(asctime)s - %(levelname)s - %(message)s"))

fh = logging.FileHandler('error.log')
fh.setLevel(logging.ERROR)
fh.setFormatter(
    logging.Formatter("%(asctime)s - %(levelname)s - %(filename)s[:%(lineno)d] - %(message)s"))

logger.addHandler(rfh)
logger.addHandler(fh)

logger.debug('debug message')
logger.info('info message')
logger.warning('warning message')
logger.error('error message')
logger.critical('critical message')
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