Python code showing how to use logging.py

use_logger.py

import argparse
import logging
    parser.add_argument('--loglevel', help='Logging level: NONE, DEBUG 10, INFO 20, WARNING 30, ERROR 40, CRITICAL 50. Default: OFF 100', type=str, default='WARNING' )
    args = parser.parse_args()

    logging.basicConfig()
    logger = logging.getLogger()
    if(args.loglevel == 'OFF'): logger.setLevel(100)
    elif(args.loglevel == 'DEBUG'): logger.setLevel(logging.DEBUG)
    elif(args.loglevel == 'INFO'): logger.setLevel(logging.INFO)
    elif(args.loglevel == 'WARNING'): logger.setLevel(logging.WARNING)
    elif(args.loglevel == 'ERROR'): logger.setLevel(logging.ERROR)
    elif(args.loglevel == 'CRITICAL'): logger.setLevel(logging.CRITICAL)
    elif(args.loglevel == 'FATAL'): logger.setLevel(logging.FATAL)

    print "not set: ", logging.NOTSET, ", INFO: ", logging.INFO, ", FATAL: ", logging.FATAL
    print "effective level: ", logger.getEffectiveLevel()

    logger.debug("debug mode")
    logger.info("info mode")
    logger.warning("warning mode")
    logger.error("error mode")
    logger.critical("critical mode")
    logger.fatal("fatal mode")

    if(logger.getEffectiveLevel() == logging.WARNING):
        print "warning only code would go here"

    if(logger.isEnabledFor(logging.INFO)):
        print "code that would be executed at info level or beyond would go here"
    return