实验八

from turtle import *
def square(size=50,rgb='yellow'):
    pencolor(rgb)
    for i in range(4):
        fd(size)
        left(90)
setup(800,600)
speed(0)
n=10
for i in range(n):
    square(80)
    left(360/n)
hideturtle()
done()

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()

from turtle import *
setup(800,600)
speed(0)
pencolor('white')
bgcolor('black')

angle=0
size=2

n=10
for i in range(n):
    for j in range(4):
        fd(size)
        angle+=71
        seth(angle)
        size+=5


hideturtle()
done()

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,0)
    rgb=tuple(random()for i in range(3))
    begin_fill()
    rect(20,50,rgb)
    end_fill()
hideturtle()
done()