helloworld.py

#!/usr/bin/env python
import sys
import logging
import logging.handlers
import optparse

def init_logger(opts):
    level = logging.INFO
    handler = logging.StreamHandler()
    #handler = logging.handlers.SysLogHandler(address='/dev/log')
    if opts.debug:
        level = logging.DEBUG
        handler = logging.StreamHandler()
    root = logging.getLogger()
    root.setLevel(level)
    root.addHandler(handler)

def parse_args(argv):
    if argv is None:
        argv = sys.argv[1:]
    p = optparse.OptionParser()
    #p.usage = '%prog [options] <arg>+'

    p.add_option('-d', '--debug', action='store_true',
            default=False, help="debug mode")

    opts, args = p.parse_args(argv)
    #sanity check

    return opts, args

def main(argv=None):
    global opts
    opts, args = parse_args(argv)
    init_logger(opts)
    logging.debug(opts)
    logging.debug(args)
    logging.info('hello world')


if __name__ == '__main__':
    rval = main()
    logging.shutdown()
    sys.exit(rval)