Parse argument for new_contract() function.

def _parse_new_contract_args(*args, **kwargs):
    """Parse argument for new_contract() function."""
    # No arguments
    if (not args) and (not kwargs):
        return [
            {
                "name": "argument_invalid",
                "msg": "Argument `*[argument_name]*` is not valid",
                "type": RuntimeError,
            }
        ]
    # Process args
    if (len(args) > 1) or ((len(args) == 1) and kwargs):
        raise TypeError("Illegal custom contract exception definition")
    if len(args) == 1:
        return [dict([("name", "default")] + list(_format_arg(args[0]).items()))]
    # Process kwargs
    return [
        dict([("name", name)] + list(_format_arg(kwargs[name]).items()))
        for name in sorted(list(kwargs.keys()))
    ]