## 实验八

from turtle import *
def square(size=50, rgb='pink'):
'''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('purple')
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()

任务四

from turtle import *
setup(800, 600)
pencolor('black')
speed(0)
n = 10
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()

任务五

from turtle import *
setup(800, 600)
bgcolor('pink')
pencolor('yellow')
speed(0)
angle = 0
size = 2
n = 10
for i in range(n):
for j in range(4):
fd(size)
angle += 72
seth(angle)
size += 2
hideturtle()
done()

任务六

from random import random
from turtle import *
setup(800, 600)
speed(0)
penup()
goto(-80,0)
pendown()
right(180)
for i in range(20):
color(tuple(random() for i in range(3)))
begin_fill()
for n in range(2):
fd(8)
right(90)
fd(24)
right(90)
end_fill()
penup()
goto(-80+8*i+8, 0)
pendown()
hideturtle()
done()