logging 模块

 1 # Author：CallMeV
 2 # DATE  ：2019-11-11
 3 # Time  : 17:04
 4 
 5 import logging
 6 
 7 logging.basicConfig(level = logging.DEBUG,
 8                     format = '%(asctime)s %(filename)s[line:%(lineno)d] %(levelname)s %(message)s',
 9                     datefmt = '%a, %d %b %Y %H:%M:%S',
10                     filename = 'test.log',
11                     filemode = 'a')
12 logging.debug('debug message')   #Mon, 11 Nov 2019 17:19:25 logging 模块（日志）.py[line:12] DEBUG debug message
13 logging.info('info message')
14 logging.warning('warning message')
15 logging.error('error message')
16 logging.critical('critical message')
17 
18 logger = logging.getLogger()
19 #创建一个handler文件，用于写入日志文件
20 fh = logging.FileHandler('test_logging')
21 
22 #再创建一个handler，用于输出到控制台
23 ch = logging.StreamHandler()
24 
25 formatter = logging.Formatter('%(asctime)s - %(levelname)s - %(message)s')
26 
27 fh.setFormatter(formatter)
28 ch.setFormatter(formatter)
29 
30 logger.addHandler(fh)
31 logger.addHandler(ch)
32 
33 logger.debug('logger debug message')
34 logger.info('logger info message')
35 logger.warning('logger warning message')
36 logger.error('logger error message')
37 logger.critical('logger critical message')