import turtle
turtle.pensize(2)#设置画笔宽度为两像素
turtle.circle(10)#绘制半径为10像素的圆
turtle.circle(40)#绘制半径为40像素的圆
turtle.circle(80)#绘制半径为80像素的圆
turtle.circle(160)#绘制半径为160像素的圆
运行结果如下:
import turtle
turtle.pensize(2)#设置画笔宽度为两像素
turtle.circle(10)#绘制半径为10像素的圆
turtle.circle(40)#绘制半径为40像素的圆
turtle.circle(80)#绘制半径为80像素的圆
turtle.circle(160)#绘制半径为160像素的圆
运行结果如下: