从start的坐标处鼠标左键单击拖曳到end的坐标处
        start, end是tuple. 格式是(x, y)

def Drag_and_release(self, start, end, dl = 0):
        """从start的坐标处鼠标左键单击拖曳到end的坐标处
        start, end是tuple. 格式是(x, y)
        """
        self.Delay(dl)
        self.mouse.press(start[0], start[1], 1)
        self.mouse.drag(end[0], end[1])
        self.Delay(0.1)
        self.mouse.release(end[0], end[1], 1)