【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('pink')

for i in range(10):

    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(4):
        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()