Repeateable -v and -q for setting logging level with argparse (Python)

argparse_logging_skeleton.py

#!/usr/bin/env python

# Example for using repeateable -v and -q for setting logging level
# with argparse. works with python 2 and 3. based on
# https://www.reddit.com/r/Python/comments/3nctlm/what_python_tools_should_i_be_using_on_every/
# 
# masklinn: """A trick I like is using repeatable -v and -q to select
# the logging level. The logging levels are actually integers with a
# 10 increment (DEBUG is 10, CRITICAL is 50).  It's very easy with
# argparse's count action or click's count=True"""
#
# script -vv -> DEBUG
# script -v -> INFO
# script -> WARNING
# script -q -> ERROR
# script -qq -> CRITICAL
# script -qqq -> no logging at all

import argparse
import logging


def main():
    parser = argparse.ArgumentParser(description=__doc__)
    parser.add_argument('-v', '--verbose', action='count', default=0)
    parser.add_argument('-q', '--quiet', action='count', default=0)
    # ...
    args = parser.parse_args()
    logging_level = logging.WARN + 10*args.quiet - 10*args.verbose
    logging.basicConfig(level=logging_level)

    logger = logging.getLogger()
    logger.debug("DEBUG")
    logger.info("INFO")
    logger.warn("WARN")
    logger.error("ERROR")
    logger.critical("CRITICAL")

if __name__ == "__main__":
    main()