def warning(message, **kwargs):
    kwargs["fg"] = kwargs.get("fg", "red")
    click.secho(u"warning: {}".format(message), **kwargs)
def setTail(self, pt):
        self.pt = pt
        self.Tail.Eq(pt)
        self.Head.setPoint(self.pt.x + self.x, self.pt.y + self.y)