python日志按时间切分-----TimedRotatingFileHandler

原生loggging类+  TimedRotatingFileHandler类 实现按day hour second 切分

import logging
from logging.handlers import TimedRotatingFileHandler

log = logging.getLogger(loggerName)

formatter = logging.Formatter('%(name)-12s %(asctime)s level-%(levelname)-8s thread-%(thread)-8d %(message)s')   # 每行日志的前缀设置
fileTimeHandler = TimedRotatingFileHandler(BASIC_LOG_PATH + filename, "S", 1, 10)

fileTimeHandler.suffix = "%Y%m%d.log"  #设置 切分后日志文件名的时间格式 默认 filename+"." + suffix 如果需要更改需要改logging 源码
fileTimeHandler.setFormatter(formatter)
logging.basicConfig(level = logging.INFO)
fileTimeHandler.setFormatter(formatter)
log.addHandler(fileTimeHandler)
try:
    log.error(msg)
except Exception, e:
    print "writeLog error"
finally:
   log.removeHandler(fileTimeHandler)