Include handling of any default arguments that all commands should
    implement here (for example, specifying the pythonpath).

def handle_default_args(args):
    """
    Include handling of any default arguments that all commands should
    implement here (for example, specifying the pythonpath).
    """

    if hasattr(args, 'pythonpath'):
        if args.pythonpath:
            sys.path.insert(0, args.pythonpath)