python logging用法

import logging

logging.basicConfig(level=logging.DEBUG,
format='%(asctime)s %(filename)s[line:%(lineno)d] %(levelname)s %(message)s',
datefmt='%a, %d %b %Y %H:%M:%S',
filename='myapp.log',  #可以指定路径
filemode='w')

logging.debug('This is debug message')
logging.info('This is info message')
logging.warning('This is warning message')
logging.error('This is warning message')