定义新的logger

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def new_logger(name='my_access',log_dir=r'D:\log'):     logger = logging.getLogger(name)     logger.propagate = False  # 不传播父logger的消息，避免重复打印     logger.handlers.clear() # 每次被调用后，清空已经存在的handler，避免重复打印日志     logger.setLevel(logging.INFO)       logpath=os.path.join(log_dir(),'log','job_access.log')     ch=logging.FileHandler(logpath)     ch.setLevel(logging.INFO)       # 设置日志格式     formatter = logging.Formatter("%(asctime)s %(msecs)03d - %(name)s - %(levelname)s - %(lineno)s %(message)s",                                   datefmt="%Y-%m-%d %H:%M:%S")     ch.setFormatter(formatter)     # 将相应的handler添加在logger对象中     logger.addHandler(ch)       return logger