def main(argv=None):
if argv is None:
argv = sys.argv[1:]
args = parser.parse_args(argv)
assert not (args.debug and args.quiet), \
'make up your mind: debug OR normal OR quiet'
if args.debug:
set_debug()
if args.quiet:
set_warning()
if args.log:
appendlog(args.log)
if args.excepthook:
sys.excepthook = traceit
args.func(args)