实验8

#实验4
from turtle import *
def square(size=50, rgb='blue'):
    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()




#实验5
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()

#实验7
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()


#实验8
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()