logging的用法

笔记

import logging

def create_logger(fp):
    #打印日志的时间、日志级别名称、日志信息 
    logging.basicConfig(level=logging.INFO, format='%(asctime)s - %(levelname)s: %(message)s')
    console_logger = logging.getLogger('ConsoleLoggoer')
    file_logger = logging.getLogger('FileLogger')
    
    #向文件输出日志信息 
    file_handler = logging.FileHandler(fp, mode='a', encoding='utf-8')
    file_logger.addHandler(file_handler)
    return console_logger, file_logger

# 创建logger
console_logger, file_logger = create_logger(os.path.join('./', 'train.log'))

file_logger.info('Args: %s' % str(123))
file_logger.info('Checkpoint path: %s' % "test")

# 2020-10-25 19:57:12,776 - INFO: Arga: 12

写入文件

 logging.basicConfig(format='%(asctime)s - %(filename)s[line:%(lineno)d] - %(levelname)s: %(message)s',
                       level=logging.DEBUG,
                       filename='test.log',
                       filemode='a')