实验八

task3

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)


    n = 10
    for i in range(n):
        square(80)
        left(360/n)
    hideturtle()
    done()
if __name__ == '__main__':
    main()

task4
from turtle import *
setup(800, 600)
speed（0）
pencolor('pink')
n = 10
for i in range(n):
    for j in range(2):
        circle(80, 90)
        left(90)
    right(360/n)
hideturtle()
done()

task5
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(4):
        fd(size)
        angle += 72
        seth(angle)
        size += 5
hideturtle()
done()

task6

from turtle import*
from random import random
setup(800,600)
speed(0)

def rect(w,h,fc):
    fillcolor(fc)
    for i in range(1,5):
        if i%2==1:
            d=w
        else:
            d=h
        fd(d)
        left(90)

def moveto(x,y):
    penup()
    goto(x,y)
    pendown()

for i in range(10):
    moveto(20*i,0)
    rgb=tuple(random()for i in range(3))
    begin_fill()
    rect(20,50,rgb)
    end_fill()

for i in range(10):
    moveto(-20*（i+1）,0)
    rgb=tuple(random()for i in range(3))
    begin_fill()
    rect(20,50,rgb)
    end_fill()
    
hideturtle()
done()