Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you may not be able to execute some actions.
Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).
想根据image.find_circles的函数如果未找到圆的返回值写一个if语句,求解,或者这个if语句怎么写