python 通过装饰器实现类的日志记载

import logging
from logging import FileHandler, Formatter
import os.path as fpath
from datetime import datetime
logfile = fpath.join(fpath.dirname(fpath.abspath(__file__)),datetime.now().strftime('%Y%m%d') + '.log')

formatter = '%(asctime)s %(levelname)-8s %(name)-15s %(funcName)s %(message)s'
dateformatter = '%Y-%m-%d %H:%M:%S'
default_level = {
    'critical': 50,
    'error': 40,
    'warning': 30,
    'info': 20,
    'debug': 10
}


def bindlog(level = 'debug'):
    def wrapper(cls):
        print(cls)
        logger = logging.getLogger(cls.__name__)
        logger.setLevel(default_level[level])
        file_handle = FileHandler(logfile)
        file_handle.setFormatter(Formatter(formatter, dateformatter))
        logger.addHandler(file_handle)        
        def inner(*args, **kwargs):
            if not hasattr(cls, 'log'):
                setattr(cls, 'log', logger)
            return(cls(*args, **kwargs))
        return inner            
    return wrapper
    

@bindlog()
class Test:
    
    
    def add(self):
        for _ in range(100):
            
            self.log.info('ceshi.')