代码如下，对照了下，没找到问题！！！！！

import logging
from logging.handlers import TimedRotatingFileHandler

log_path = ""

class Log():
    def __init__(self, logname, logger,loglevel=logging.DEBUG):
        # set log level
        self.logger = logging.getLogger(logger)
        self.logger.setLevel(loglevel)

        # file handler for log
        #fh = logging.FileHandler(logname)
        fh = TimedRotatingFileHandler(log_path+logname, when='D' ,interval=10,backupCount=40)
        fh.setLevel(loglevel)

        # stream handler for log
        ch = logging.StreamHandler()
        ch.setLevel(loglevel)

        # define log format
        formatter = logging.Formatter('%(asctime)s - %(name)s - %(funcName)s - %(levelname)s - %(message)s')
        #formatter = format_dict[int(loglevel)]
        fh.setFormatter(formatter)
        ch.setFormatter(formatter)

        # add logger handler
        self.logger.addHandler(fh)
        self.logger.addHandler(ch)

    def getlog(self):
        return self.logger

logger = Log(logname='log.txt', logger="fb_api").getlog()

if __name__=='__main__':
    log_test = Log('test.log', logger='test').getlog()
    log_test.info('info')
    log_test.debug('debug')
    log_test.error('error')