turtle 同心圆
import turtle turtle.circle(100) turtle.up() turtle.goto(0,50) turtle.down() turtle.circle(50) turtle.up() turtle.goto(0,-50) turtle.down() turtle.circle(150) turtle.up() turtle.goto(0,-100) turtle.down() turtle.circle(200) turtle.down
import turtle turtle.circle(100) turtle.up() turtle.goto(0,50) turtle.down() turtle.circle(50) turtle.up() turtle.goto(0,-50) turtle.down() turtle.circle(150) turtle.up() turtle.goto(0,-100) turtle.down() turtle.circle(200) turtle.down