my_logging.py

import sys
import logging; from logging import config
import typing; from typing import *

def get_log_level(log_args):
    valid_levels = ['DEBUG', 'INFO', 'WARNING', 'ERROR'] # numeric levels 10, 20, 30, 40
    proposed_level = log_args[0].split("=", 1)[1].upper()
    if not proposed_level in valid_levels:
        raise ValueError('MY_LOGGER - Invalid log level: %s' % proposed_level)
    return proposed_level

def setup_log_level():
    """
    https://docs.python.org/3/library/logging.html

    Note: Manually override the lowest-severity log message level
    that the logger will handle from the command line by executing with flags:
    i.e. python main.py --log=WARNING
    Sample usage:
        logger.debug('debug message')
        logger.info('info message')
        logger.warning('warn message')
        logger.error('error message')

    Introspection usage:
        logging.debug("\nHelp:\n %r", help.__doc__)
        logging.debug("\nDict:\n %r", <object>.__dict__)
        logging.debug("\nType: %r", type(level))
    """

    # Load logger config
    logging.config.fileConfig('logging.conf')

    # Create logger
    logger = logging.getLogger('MY_LOGGER - AIND-Planning logger')
    logger.setLevel('ERROR') # specifies lowest-severity log message a logger will handle

    if len(sys.argv):
        log_args = [arg for arg in sys.argv if '--log=' in arg]
        if len(log_args) > 0:
            logger.setLevel(get_log_level(log_args))

    # Get current logging level
    numeric_level = logging.getLogger().getEffectiveLevel()
    logging.info('MY_LOGGER - Starting AIND-Planning with logger level: %r', numeric_level)