https://docs.python.org/3/howto/logging.html
import logging # create logger
logger = logging.getLogger('simple_example')
logger.setLevel(logging.DEBUG) # create console handler and set level to debug
ch = logging.StreamHandler()
ch.setLevel(logging.DEBUG) # create formatter
formatter = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s') # add formatter to ch
ch.setFormatter(formatter) # add ch to logger
logger.addHandler(ch) # 'application' code
logger.debug('debug message')
logger.info('info message')
logger.warn('warn message')
logger.error('error message')
logger.critical('critical message')