What cost logging module basicConfig an error

Question

import logging

logging.basicConfig(level=logging.debug,filename ='hi.txt', filemode= 'w',format= '%(asctime)s')
logging.debug('from debug' )

Answer 1

The level should be a string or a number, this works but doesn't give any output:

import logging

logging.basicConfig(level="DEBUG",filename ='hi.txt', filemode= 'w',format= '%(asctime)s')
logging.debug('from debug' )

Answer 2

But some use function and it work