def warning(message, **kwargs):
    kwargs["fg"] = kwargs.get("fg", "red")
    click.secho(u"warning: {}".format(message), **kwargs)
def deserialize(self, value):
        value = decode(value).strip()
        validators.validate_required(value, self._required)
        if not value:
            return None
        validators.validate_choice(value, self._choices)
        return value