configure_logging.py

def parse_command_line():
    """Defines and parses command line arguments"""
    parser = argparse.ArgumentParser()
    parser.add_argument('-v', '--verbose', action='count', default=0)
    return parser.parse_args()


def configure_logging(args):
    """Configures logging as specified by the author and the user"""
    levels = [logging.WARNING, logging.INFO, logging.DEBUG]
    level = levels[args.verbose % len(levels)]
    logging.basicConfig(
        level=level,
        format=("%(asctime)s %(levelname)s %(name)s.%(funcName)s "
                "[%(filename)s:%(lineno)s] %(message)s"))

... and use getLogger in your classes like this:

class Example(object):

  def __init__(self):
        self.logger = logging.getLogger(self.__class__.__name__)