python logging模块日志回滚TimedRotatingFileHandler

# coding=utf-8
import logging
import time
import os
import logging.handlers
import re
def logger(appname,rootstdout=True):

    log_fmt= "%(asctime)s --%(name)s [%(levelname)s]:\n%(message)s"
    c_fmt="%(asctime)s --%(name)s %(filename)s.%(funcName)s():%(lineno)d [%(levelname)s]:\n%(message)s"
    date_format = "%Y-%m-%d %H:%M:%S %a"
    # 设置控制台输出level
    logging.basicConfig(level=logging.DEBUG,
                            format=c_fmt,
                            datefmt=date_format,

                            )

    list_level=["Error","Info","Warning","Debug"]
    stamp = "dailylog.log"
    logsdir=os.path.join(os.getcwd(),"logs")
    if os.path.exists(logsdir):
        for p in list_level:
            if os.path.exists(os.path.join(logsdir,p)):
                pass
            else:
                os.mkdir(os.path.join(logsdir,p))
    else:
        os.mkdir(logsdir)
        list_level=["Error","Info","Warning","Debug"]
        for p in list_level:
             print(os.path.join(logsdir,p))
             os.mkdir(os.path.join(logsdir,p))

    f_dict={}
    for i in list_level:
        filename=os.path.join(logsdir,i,stamp)
        f_dict[i]=filename
    logger= logging.getLogger(appname)

    for k,v in f_dict.items():
            handler=logging.handlers.TimedRotatingFileHandler(filename=v,when='MIDNIGHT', interval=1, backupCount=4)
            handler.suffix = "%Y-%m-%d.log"
            handler.extMatch = r"^\d{4}-\d{2}-\d{2}.log$"
            handler.extMatch = re.compile(handler.extMatch)
            h_fmt=logging.Formatter(log_fmt)
            handler.setFormatter(h_fmt)
            if k==list_level[0]:
                handler.setLevel(logging.ERROR)
            elif k==list_level[1]:
                handler.setLevel(logging.INFO)
            elif k== list_level[2]:
                 handler.setLevel(logging.WARNING)
            else :
                 handler.setLevel(logging.DEBUG)
            logger.addHandler(handler)
　　 #是否控制台输出stdout
    logger.propagate = rootstdout
    return  logger

if __name__ == "__main__":
        logger=logger("root",rootstdout=True)

        time.sleep(0.01)
        try:
            assert  1==2
        except Exception as e:
　　　　　　　 # exc_info用来抛出异常到控制台或日志文件
            logger.info("ddd",exc_info=True)

        logger.debug("bebug test")
        logger.error("error test")
        logger.warning("warning test")

2019-03-21 23:27:52 Thu --root timeromat.py.<module>():67 [INFO]:
ddd
Traceback (most recent call last):
File "C:/Users/Administrator/PycharmProjects/Supro/src/timeromat.py", line 65, in <module>
assert 1==2
AssertionError
2019-03-21 23:27:52 Thu --root timeromat.py.<module>():69 [DEBUG]:
bebug test
2019-03-21 23:27:52 Thu --root timeromat.py.<module>():70 [ERROR]:
error test
2019-03-21 23:27:52 Thu --root timeromat.py.<module>():71 [WARNING]:
warning test

Process finished with exit code 0