import time
import logging
import os
from logging import handlers
def _logging(**kwargs):
  level = kwargs.pop('level', None)
  filename = kwargs.pop('filename', None)
  datefmt = kwargs.pop('datefmt', None)
  format = kwargs.pop('format', None)
  if level is None:
    level = logging.DEBUG
  if filename is None:
    filename = 'default.log'
  if datefmt is None:
    datefmt = '%Y-%m-%d %H:%M:%S'
  if format is None:
    format = '%(asctime)s [%(module)s] %(levelname)s [%(lineno)d] %(message)s'
  log = logging.getLogger(filename)
  format_str = logging.Formatter(format, datefmt)
  # backupCount 保存日志的数量，过期自动删除
  # when 按什么日期格式切分(这里方便测试使用的秒)
  th = handlers.TimedRotatingFileHandler(filename=filename, when='S', backupCount=3, encoding='utf-8')
  th.setFormatter(format_str)
  th.setLevel(logging.INFO)
  log.addHandler(th)
  log.setLevel(level)
  return log
os.makedirs("./logs", exist_ok=True)
logger = _logging(filename='./logs/default.log')
if __name__ == '__main__':
  while True:
    time.sleep(0.1)
    logger.info('哈哈哈')

# 在上述代码中加入
def namer(filename):
  return filename.split('default.')
th.namer = namer
# 设置为S，默认的suffix为 Y-%m-%d_%H-%M-%S
th.suffix = "%Y-%m-%d_%H-%M-%S.log"
# 为了看的更视觉效果，可以显示在控制台答应
cmd = logging.StreamHandler()
cmd.setFormatter(format_str)
cmd.setLevel(level)
log.addHandler(cmd)

def getFilesToDelete(self):
    """
    Determine the files to delete when rolling over.

    More specific than the earlier method, which just used glob.glob().
    """
    dirName, baseName = os.path.split(self.baseFilename)
    fileNames = os.listdir(dirName)
    result = []
    prefix = baseName + "."
    plen = len(prefix)
    for fileName in fileNames:
      if fileName[:plen] == prefix:
        suffix = fileName[plen:]
        if self.extMatch.match(suffix):
          result.append(os.path.join(dirName, fileName))
    if len(result) < self.backupCount:
      result = []
    else:
      result.sort()
      result = result[:len(result) - self.backupCount]
    return result

import logging
import os
from logging import handlers
def _logging(**kwargs):
  level = kwargs.pop('level', None)
  filename = kwargs.pop('filename', None)
  datefmt = kwargs.pop('datefmt', None)
  format = kwargs.pop('format', None)
  if level is None:
    level = logging.DEBUG
  if filename is None:
    filename = 'default.log'
  if datefmt is None:
    datefmt = '%Y-%m-%d %H:%M:%S'
  if format is None:
    format = '%(asctime)s [%(module)s] %(levelname)s [%(lineno)d] %(message)s'
  log = logging.getLogger(filename)
  format_str = logging.Formatter(format, datefmt)
  def namer(filename):
    return filename.split('default.')[1]
  # cmd = logging.StreamHandler()
  # cmd.setFormatter(format_str)
  # cmd.setLevel(level)
  # log.addHandler(cmd)
  os.makedirs("./debug/logs", exist_ok=True)
  th_debug = handlers.TimedRotatingFileHandler(filename="./debug/" + filename, when='D', backupCount=3,
                         encoding='utf-8')
  # th_debug.namer = namer
  th_debug.suffix = "%Y-%m-%d.log"
  th_debug.setFormatter(format_str)
  th_debug.setLevel(logging.DEBUG)
  log.addHandler(th_debug)
  th = handlers.TimedRotatingFileHandler(filename=filename, when='D', backupCount=3, encoding='utf-8')
  # th.namer = namer
  th.suffix = "%Y-%m-%d.log"
  th.setFormatter(format_str)
  th.setLevel(logging.INFO)
  log.addHandler(th)
  log.setLevel(level)
  return log
os.makedirs('./logs', exist_ok=True)
logger = _logging(filename='./logs/default')