logging日志过滤和日志文件自动截取

Posted 2020-10-31

1.日志过滤

import logging

class IgnoreFilter(logging.Filter):
    def filter(self,record):
        return "girl" not in record.getMessage()       #如果girl不在record里，则返回True

# 1.生成logger对象
logger = logging.getLogger("130")
logger.setLevel(logging.DEBUG)   #不设置级别，默认最低级别是warning。

logger.addFilter(IgnoreFilter())
# 2.生成handler对象
#  把handler对象绑定到logger
ch = logging.StreamHandler()
# ch.setLevel(logging.DEBUG)            #对屏幕和文件分别设置级别
fh = logging.FileHandler("130.log")
# fh.setLevel(logging.ERROR)

logger.addHandler(ch)
logger.addHandler(fh)

# 3.生成formatter对象
#   把formatter对象绑定到handler
file_formatter = logging.Formatter("%(asctime)s %(name)s %(levelname)s %(message)s")
console_formatter = logging.Formatter("%(asctime)s %(name)s %(levelname)s %(lineno)s %(message)s")

ch.setFormatter(console_formatter)
fh.setFormatter(file_formatter)

logger.debug("miss eat")
logger.warning("hello girl")

　

2.日志截断

2.1 根据日志大小截断

maxBytes 最大字节  backupCount 文件最多存在的个数。

from loggign import handlers
fh = handlers.RotatingFileHandler("130.log",maxBytes=10,backupCount = 5)

　　

2.2 按照时间间隔来截断日志，最多生成五个

when 时间单位，interval 时间间隔。

 

fh = handlers.TimedRotatingFileHandler("130.log",when = "s",interval = 5,backupCount = 5)