8

from turtle import *


def square(size=50, rgb='orange'):
    '''绘制正方形
    参数size指定边长
    参数rgb指定画笔颜色
    如果没有给参数，采用默认值'''
    pencolor(rgb)
    for i in range(4):
        fd(size)
        left(90)


def main():
    setup(800, 600)
    speed(0)
    n = 10
    for i in range(n):
        square(80)
        left(360 / n)

    hideturtle()
    done()


if __name__ == '__main__':
    main()

from turtle import *

setup(800, 600)
pencolor('pink')
n = 10
speed(0)

for i in range(n):
    # 绘制一片花瓣
    for j in range(2):
        circle(80, 90)
        left(90)
    right(360 / n)

hideturtle()
done()

from turtle import *

setup(800, 600)
bgcolor('black')
pencolor('white')
speed(0)

angle = 0
size = 2
n = 10

for i in range(n):
    for j in range(5):
        fd(size)
        angle += 360 / 5
        seth(angle)
        size += 5

hideturtle()
done()

from random import random
from turtle import *

def rect():
    rgb = tuple(random() for i in range(3))
    color(rgb)
    begin_fill()
    for i in range(2):
        fd(20)
        left(90)
        fd(60)
        left(90)
    end_fill()
    
def main():
    goto(-11*20, 0)
    for i in range(20):
        rect()
        fd(20)

setup(800, 600)
speed(0)
main()