Demonstrate handling of command line options using optparse

handle_opts.py

import optparse
import sys

global debug

progDesc = (
    'Welcome to %prog.  It\'s meant for frobbing foozles, and otherwise'
    'making for better frognosticators.'
)

op = optparse.OptionParser(usage='Usage: %prog [options]',
                           description=progDesc, version='%prog v0.99')
op.add_option('-d', '--debug', action='store_true', dest='debug',
              help='Enable debug mode', default=False)
op.add_option('-u', '--user', action='store', help='User ID goes here')
op.add_option('-f', '--file', action='store',
              help='File name for the stuff', default='frood.conf')

(options, args) = op.parse_args()

if options.debug:
    print('[*] Debug mode enabled')
    debug = True
else:
    debug = False

if not options.user:
    op.print_help()
    sys.exit(1)

print('[*] User:  {user}'.format(user=options.user))
print('[*] File:  {file}'.format(file=options.file))
print('[*] Debug: {debug}'.format(debug=options.debug))