def __repr__(self):
        return "<Requirement(package={package}, version='{version}')>".format(
            package=self.package, version=self.version)
def drawMe(self, g):
        self.g = g
        self.g.beginPath()
        self.g.moveTo(self.p1.x,self.p1.y)
        self.g.lineTo(self.p2.x,self.p2.y)
        self.g.stroke()