• DEBUG
• INFO
• WARNING, default level, only events of this level and above will be tracked
• ERROR
• CRITICAL

#WARNING is defalut level
import logging

logging.warning('Watch out!')  # will print a message to the console
logging.info('I told you so')  # will not print anything
			

import logging
logging.basicConfig(level=logging.DEBUG);

logging.warning('Watch out!') # will print
logging.info('I told you so') # will print
			

import logging

logging.basicConfig(filename='log.txt', level=logging.DEBUG);

logging.warning('Watch out!')
logging.info('I told you so')
			

import logging

def doSomething():
    logging.info('Logging in lib ...');
			

import lib
import logging

logging.basicConfig(filename='log.txt', level=logging.DEBUG);

lib.doSomething()
logging.warning('Watch out!')
logging.info('I told you so')
			

import logging

logging.basicConfig(format='[%(levelname)s]: %(message)s', level=logging.DEBUG);

logging.warning('Watch out!')
logging.info('I told you so')
			

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