输出如下
代码如下
'''
绘制9个同心圆
@Ref 2017.Python语言程序设计基础.第2版.嵩天, p55
@Version: v0.1, Python 3.9.5, Notus(hehe_xiao@qq.com), 2021.06.18
@Updated: 2021.06.18
'''
from turtle import *
def drawConcentricCircles():
color("red")
x, y = 0, 0 # 圆心
for i in range(9):
radius = (i + 1) * 20 # 半径
penup()
goto(x, y - radius)
pendown()
circle(radius, 360)
done()
drawConcentricCircles()