在edge impulse上部署模型后，如果识别不到输入类，可以显示not found吗

谢谢

import sensor, image, time

sensor.reset()
sensor.set_pixformat(sensor.RGB565) # 灰度更快(160x120 max on OpenMV-M7)
sensor.set_framesize(sensor.QQVGA)#160 * 120
sensor.skip_frames(time = 2000)
clock = time.clock()

while(True):
    clock.tick()
    img = sensor.snapshot()

    for r in img.find_rects(threshold = 20000):                                         
              
        img.draw_rectangle(r.rect(), color = (255, 0, 0))
        rects=img.find_rects(threshold = 20000)
            
      
        for p in r.corners(): 
            img.draw_circle(p[0], p[1], 5, color = (0, 255, 0)) 
            x=rect.x()
        
        print(r)

    print("FPS %f" % clock.fps())

运行报错NameError: name 'rect' isn't defined
应该如何写这个函数（rect.x()）

找不到视频中的串口