I’m not familiar with this module, but it looks like it’s not based around pixels. I think you need shapesize() and will have to convert to pixels yourself.
Hey! I think it is vector based. I switched to PyGame althought I liked turtle a bit (for the challenge at least). shapesize() and turtlesize() are both vect. based I believe.
To be honest, I don’t not know what to do to convert that to pixels. I don’t know if we have given data to do that ourselves.