@kidswong999 原来如此，谢谢！

报错指向最后一行代码，有的时候程序能够正常运行，可以输出最后一行代码的两个值

THRESHOLD = (153, 255) # Grayscale threshold for dark things...

#设置是否使用img.binary()函数进行图像分割
BINARY_VISIBLE = True # 首先执行二进制操作，以便您可以看到正在运行的线性回归

import sensor, image, time

sensor.reset()
sensor.set_pixformat(sensor.GRAYSCALE)
sensor.set_framesize(sensor.QQVGA)
sensor.skip_frames(time = 2000)
clock = time.clock()

while(True):
    clock.tick()
    img = sensor.snapshot().binary([THRESHOLD]) if BINARY_VISIBLE else sensor.snapshot()
    singleline_check = img.get_regression([(255,255) if BINARY_VISIBLE else THRESHOLD],robust = True)

    if (singleline_check): img.draw_line(singleline_check.line(), color = 127)
    print("FPS %f, mag = %s" % (clock.fps(), str(singleline_check.magnitude()) if (singleline_check) else "N/A"))
    print(singleline_check.theta(),singleline_check.rho())