实验六

from turtle import *
def square(size=50, rgb = 'yellow'):
    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('yellow')
speed(0)

def yuan():
    for i in range(2):
        circle(80,90)
        left(90)

for j in range(10):
    yuan()
    left(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(4):
        fd(size)
        angle += 72
        seth(angle)
        size += 5

hideturtle()
done()

from turtle import *
from random import random
def square():
    for i in range(2):
        fd(10)
        left(90)
        fd(20)
        left(90)
speed(0)
setup(800,600)
penup()
left(180)
fd(100)
left(180)
pendown()
for j in range(20):
    rgb=tuple(random() for k in range(3))
    color(rgb)
    begin_fill()
    square()
    end_fill()
    square()
    fd(10)
done()