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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def sanitize_args(args):
 """ args may need a bunch of logic to set proper defaults that argparse is not well suited for. """

    if args.release is None:
        args.release = 'nautilus'
        args.default_release = True

    # XXX This whole dance is because --stable is getting deprecated
    if args.stable is not None:
        LOG.warning('the --stable flag is deprecated, use --release instead')
        args.release = args.stable
    # XXX Tango ends here.

    return args