66:综合练习_绘制不同颜色的多个同心圆_绘制棋盘
1. 【操作】绘制多个同心圆
import turtle
t = turtle.Pen()
my_colors = ("red", "green", "yellow", "black")
t.width(4)
t.speed(1)
for i in range(10): # 0 1 2 3 4
t.penup()
t.goto(0, -i * 10) # 0, -100,-200,-300,-400
t.pendown()
t.color(my_colors[i % len(my_colors)])
t.circle(15 + i * 10) # 100,200,300, 400,, 500
turtle.done() # 程序执行完,窗口仍然在
执行结果:
2. 【操作】绘制 18*18 棋盘
# 画棋盘
import turtle
width = 30
num = 18
x1 = [(-400, 400), (-400 + width * num, 400)]
y1 = [(-400, 400), (-400, 400 - width * num)]
t = turtle.Pen()
t.speed(10)
for i in range(0, 19):
t.penup()
t.goto(x1[0][0], x1[0][1] - 30 * i)
t.pendown()
t.goto(x1[1][0], x1[1][1] - 30 * i)
for i in range(0, 19):
t.penup()
t.goto(y1[0][0] + 30 * i, y1[0][1])
t.pendown()
t.goto(y1[1][0] + 30 * i, y1[1][1])
t.hideturtle() # 隐藏画笔
turtle.done() # 保证运行窗口不被自动关闭
输出结果: