实验6

from turtle import *
# 绘制正方形
# 参数size指定边长，rgb指定画笔颜色
# 如果没有给参数，采用默认值
def square(size=50, rgb = ‘orange‘):
    pencolor(rgb)
    for i in range(4):
        fd(size)
        left(90)
def main():
    setup(800, 600)
    speed(0)
    for i in range(10):
        square(80)
        left(36)
    hideturtle()
    done()
if __name__ == ‘__main__‘:
    main()

from turtle import *
setup(800, 600)
pencolor(‘pink‘)
for i in range(10):
    # 绘制一片花瓣
    for i in range(2):
        circle(80, 90)
        left(90)
    right(36)
hideturtle()
done()

from turtle import *
speed(0)
setup(800, 600)
bgcolor(‘black‘)
pencolor(‘white‘)
angle = 0
size = 2
for i in range(10):
    for j in range(5):
        fd(size)
        angle +=72
        seth(angle)
        size += 5
hideturtle()
done()

from turtle import*
from random import random

setup(800,600)
penup()
goto(-200,0)
pendown()
for x in range(1,21):
    rgb=tuple(random()for i in range(3))
    color(rgb)
    begin_fill()
    fd(20)
    left(90)
    fd(50)
    left(90)
    fd(20)
    left(90)
    fd(50)
    left(90)
    fd(20)
    end_fill()

hideturtle()
done()